diff --git a/data/uking_functions.csv b/data/uking_functions.csv
index fa88e913..275c8b0a 100644
--- a/data/uking_functions.csv
+++ b/data/uking_functions.csv
@@ -88713,8 +88713,8 @@
 0x0000007101166f44,ResourceBxml::parse,28,_ZThn632_N4ksys3res9ActorLink6parse_EPhmPN4sead4HeapE
 0x0000007101166f60,sub_7101166F60,124,_ZN4ksys3res9ActorLink9finalize_Ev
 0x0000007101166fdc,sub_7101166FDC,124,_ZThn632_N4ksys3res9ActorLink9finalize_Ev
-0x0000007101167058,Bxml::hasTagByName,164,_ZNK4ksys3res9ActorLink6hasTagEPKc?
-0x00000071011670fc,Bxml::hasTag,108,_ZNK4ksys3res9ActorLink6hasTagENS_3act3TagE
+0x0000007101167058,Bxml::hasTagByName,164,_ZNK4ksys3res9ActorLink6hasTagEPKc
+0x00000071011670fc,Bxml::hasTag,108,_ZNK4ksys3res9ActorLink6hasTagENS_3act3TagE?
 0x0000007101167168,sub_7101167168,236,_ZN4ksys3res9ActorLinkD2Ev
 0x0000007101167254,sub_7101167254,224,_ZN4ksys3res9ActorLinkD0Ev
 0x0000007101167334,sub_7101167334,8,_ZNK4ksys3res9ActorLink27checkDerivedRuntimeTypeInfoEPKN4sead15RuntimeTypeInfo9InterfaceE?
@@ -90976,8 +90976,8 @@
 0x000000710120cbec,j__ZdlPv_1240,4,
 0x000000710120cbf0,nullsub_4702,4,
 0x000000710120cbf4,sub_710120CBF4,8,
-0x000000710120cbfc,sub_710120CBFC,36,
-0x000000710120cc20,sub_710120CC20,16,
+0x000000710120cbfc,sub_710120CBFC,36,_ZN4ksys3res7CounterD0Ev?
+0x000000710120cc20,sub_710120CC20,16,_ZN4ksys3res7Counter10doSetData_ERKNS0_11CounterBase4DataE
 0x000000710120cc30,ResourceMgrInvoker::invoke,24,
 0x000000710120cc48,ResourceMgrInvoker::clone,76,
 0x000000710120cc94,ResourceMgrInvoker2::invoke,24,
@@ -91058,9 +91058,9 @@
 0x0000007101213250,callResourceMgrTaskMethodOO,16,
 0x0000007101213260,res::setCompactionStopped,24,
 0x0000007101213278,res::texHandleMgrSetSomeFlags,24,
-0x0000007101213290,return_1,8,
-0x0000007101213298,return_0_,8,
-0x00000071012132a0,return_0_2,8,
+0x0000007101213290,return_1,8,_ZN4ksys3res18stubbedLogFunctionEv
+0x0000007101213298,return_0_,8,_ZN4ksys3res11returnFalseEv
+0x00000071012132a0,return_0_2,8,_ZN4ksys3res12returnFalse2Ev
 0x00000071012132a8,nullsub_4703,4,
 0x00000071012132ac,return_0__,8,
 0x00000071012132b4,nullsub_4704,4,
@@ -93226,30 +93226,30 @@
 0x00000071012bc86c,sub_71012BC86C,76,
 0x00000071012bc8b8,nullsub_4787,4,
 0x00000071012bc8bc,sub_71012BC8BC,76,
-0x00000071012bc908,sub_71012BC908,32,
-0x00000071012bc928,nullsub_4788,4,
-0x00000071012bc92c,j__ZdlPv_1297,4,
-0x00000071012bc930,sub_71012BC930,12,
-0x00000071012bc93c,sub_71012BC93C,24,
-0x00000071012bc954,sub_71012BC954,28,
-0x00000071012bc970,sub_71012BC970,12,
-0x00000071012bc97c,sub_71012BC97C,12,
-0x00000071012bc988,sub_71012BC988,8,
-0x00000071012bc990,ResourceInfoContainer::ctor,68,
-0x00000071012bc9d4,ResourceInfoContainer::dtor,20,
-0x00000071012bc9e8,ResourceInfoContainer::dtorDelete,52,
-0x00000071012bca1c,ResourceInfoContainer::loadSizeTable,500,
-0x00000071012bcc10,ResourceInfoContainer::getResourceSize,384,
-0x00000071012bcd90,sub_71012BCD90,180,
-0x00000071012bce44,sub_71012BCE44,176,
-0x00000071012bcef4,res::ResourceMgrTask::BinderArray::ctor,136,
-0x00000071012bcf7c,sub_71012BCF7C,80,
-0x00000071012bcfcc,sub_71012BCFCC,96,
-0x00000071012bd02c,res::ResourceMgrTask::BinderArray::setPointers,128,
-0x00000071012bd0ac,res::ResourceMgrTask::BinderArray::getFreeBinder,116,
-0x00000071012bd120,sub_71012BD120,116,
-0x00000071012bd194,res::ResourceMgrTask::BinderArray::b,92,
-0x00000071012bd1f0,res::ResourceMgrTask::BinderArray::a,92,
+0x00000071012bc908,sub_71012BC908,32,_ZN4ksys3res11CounterBaseC2Ev
+0x00000071012bc928,nullsub_4788,4,_ZN4ksys3res11CounterBaseD1Ev
+0x00000071012bc92c,j__ZdlPv_1297,4,_ZN4ksys3res11CounterBaseD0Ev
+0x00000071012bc930,sub_71012BC930,12,_ZN4ksys3res11CounterBase7setDataERKNS1_4DataE
+0x00000071012bc93c,sub_71012BC93C,24,_ZN4ksys3res11CounterBase12incrementRefEv
+0x00000071012bc954,sub_71012BC954,28,_ZN4ksys3res11CounterBase12decrementRefEv
+0x00000071012bc970,sub_71012BC970,12,_ZN4ksys3res11CounterBase7setFlagEv
+0x00000071012bc97c,sub_71012BC97C,12,_ZN4ksys3res11CounterBase5resetEv
+0x00000071012bc988,sub_71012BC988,8,_ZNK4ksys3res11CounterBase9isFlagSetEv
+0x00000071012bc990,ResourceInfoContainer::ctor,68,_ZN4ksys3res21ResourceInfoContainerC1Ev
+0x00000071012bc9d4,ResourceInfoContainer::dtor,20,_ZN4ksys3res21ResourceInfoContainerD1Ev
+0x00000071012bc9e8,ResourceInfoContainer::dtorDelete,52,_ZN4ksys3res21ResourceInfoContainerD0Ev
+0x00000071012bca1c,ResourceInfoContainer::loadSizeTable,500,_ZN4ksys3res21ResourceInfoContainer21loadResourceSizeTableEv?
+0x00000071012bcc10,ResourceInfoContainer::getResourceSize,384,_ZN4ksys3res21ResourceInfoContainer15getResourceSizeERKN4sead14SafeStringBaseIcEE?
+0x00000071012bcd90,sub_71012BCD90,180,_ZNK4ksys3res21ResourceInfoContainer14ResStringEntry7compareERKN4sead14SafeStringBaseIcEE
+0x00000071012bce44,sub_71012BCE44,176,_ZN4ksys3res12_GLOBAL__N_114stringLessThanERKN4sead14SafeStringBaseIcEES6_
+0x00000071012bcef4,res::ResourceMgrTask::BinderArray::ctor,136,_ZN4ksys3res16ResourceUnitPoolC1Ev
+0x00000071012bcf7c,sub_71012BCF7C,80,_ZN4ksys3res16ResourceUnitPoolD1Ev
+0x00000071012bcfcc,sub_71012BCFCC,96,_ZN4ksys3res16ResourceUnitPoolD0Ev
+0x00000071012bd02c,res::ResourceMgrTask::BinderArray::setPointers,128,_ZN4ksys3res16ResourceUnitPool4initEv
+0x00000071012bd0ac,res::ResourceMgrTask::BinderArray::getFreeBinder,116,_ZN4ksys3res16ResourceUnitPool8tryAllocEv
+0x00000071012bd120,sub_71012BD120,116,_ZN4ksys3res16ResourceUnitPool5allocEv
+0x00000071012bd194,res::ResourceMgrTask::BinderArray::b,92,_ZN4ksys3res16ResourceUnitPool4freeEPNS0_12ResourceUnitE
+0x00000071012bd1f0,res::ResourceMgrTask::BinderArray::a,92,_ZN4ksys3res16ResourceUnitPool11freeForSyncEPNS0_12ResourceUnitE
 0x00000071012bd24c,sub_71012BD24C,92,
 0x00000071012bd2a8,sub_71012BD2A8,136,
 0x00000071012bd330,sub_71012BD330,8,
diff --git a/lib/sead b/lib/sead
index 9b70917b..de2d5095 160000
--- a/lib/sead
+++ b/lib/sead
@@ -1 +1 @@
-Subproject commit 9b70917bc4c0b112ca38ba2a2df2c2f9624289b7
+Subproject commit de2d50951821f4b16e211a6f5042a3fe094e7b73
diff --git a/src/KingSystem/Resource/CMakeLists.txt b/src/KingSystem/Resource/CMakeLists.txt
index 09ec38ef..bd9b5c16 100644
--- a/src/KingSystem/Resource/CMakeLists.txt
+++ b/src/KingSystem/Resource/CMakeLists.txt
@@ -88,12 +88,16 @@ target_sources(uking PRIVATE
   resCacheCriticalSection.h
   resControlTask.cpp
   resControlTask.h
+  resCounter.cpp
+  resCounter.h
   resCurrentResNameMgr.cpp
   resCurrentResNameMgr.h
   resEntryFactory.cpp
   resEntryFactory.h
   resHandle.cpp
   resHandle.h
+  resInfoContainer.cpp
+  resInfoContainer.h
   resLoadRequest.cpp
   resLoadRequest.h
   resMemoryTask.cpp
@@ -102,11 +106,14 @@ target_sources(uking PRIVATE
   resOffsetReadFileDevice.h
   resResourceMgrTask.cpp
   resResourceMgrTask.h
+  resSystem.cpp
   resSystem.h
   resTaskRequest.cpp
   resTaskRequest.h
   resUnit.cpp
   resUnit.h
+  resUnitPool.cpp
+  resUnitPool.h
 
   resResource.cpp
   resResource.h
diff --git a/src/KingSystem/Resource/resCounter.cpp b/src/KingSystem/Resource/resCounter.cpp
new file mode 100644
index 00000000..20fc787a
--- /dev/null
+++ b/src/KingSystem/Resource/resCounter.cpp
@@ -0,0 +1,40 @@
+#include "KingSystem/Resource/resCounter.h"
+
+namespace ksys::res {
+
+CounterBase::CounterBase() = default;
+
+CounterBase::~CounterBase() = default;
+
+bool CounterBase::setData(const CounterBase::Data& data) {
+    return doSetData_(data);
+}
+
+void CounterBase::incrementRef() {
+    mRefCount.increment();
+}
+
+void CounterBase::decrementRef() {
+    if (mRefCount)
+        mRefCount.decrement();
+}
+
+void CounterBase::setFlag() {
+    mFlag = true;
+}
+
+void CounterBase::reset() {
+    [[maybe_unused]] const auto count = mRefCount;
+    mFlag = false;
+}
+
+bool CounterBase::isFlagSet() const {
+    return mFlag;
+}
+
+bool Counter::doSetData_(const CounterBase::Data& data) {
+    mData = data.mData;
+    return true;
+}
+
+}  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resCounter.h b/src/KingSystem/Resource/resCounter.h
new file mode 100644
index 00000000..74b1913f
--- /dev/null
+++ b/src/KingSystem/Resource/resCounter.h
@@ -0,0 +1,54 @@
+#pragma once
+
+#include <basis/seadTypes.h>
+#include <prim/seadRuntimeTypeInfo.h>
+#include <thread/seadAtomic.h>
+#include "KingSystem/Utils/Types.h"
+
+namespace ksys::res {
+
+class CounterBase {
+public:
+    class DataBase {
+        SEAD_RTTI_BASE(DataBase)
+    };
+
+    class Data : public DataBase {
+        SEAD_RTTI_OVERRIDE(Data, DataBase)
+    public:
+        explicit Data(void* data) : mData(data) {}
+        virtual ~Data() = default;
+        void* mData;
+    };
+
+    CounterBase();
+    virtual ~CounterBase();
+
+    bool setData(const Data& data);
+
+    void incrementRef();
+    void decrementRef();
+
+    void setFlag();
+    void reset();
+    bool isFlagSet() const;
+
+private:
+    virtual bool doSetData_(const Data& data) = 0;
+
+    bool mFlag = true;
+    sead::Atomic<s32> mRefCount;
+};
+
+class Counter : public CounterBase {
+public:
+    Counter() = default;
+    ~Counter() override = default;
+
+private:
+    bool doSetData_(const Data& data) override;
+
+    void* mData = nullptr;
+};
+
+}  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resInfoContainer.cpp b/src/KingSystem/Resource/resInfoContainer.cpp
new file mode 100644
index 00000000..f1669f80
--- /dev/null
+++ b/src/KingSystem/Resource/resInfoContainer.cpp
@@ -0,0 +1,113 @@
+#include "KingSystem/Resource/resInfoContainer.h"
+#include <codec/seadHashCRC32.h>
+#include <prim/seadBitUtil.h>
+#include "KingSystem/Resource/resLoadRequest.h"
+#include "KingSystem/Resource/resResource.h"
+#include "KingSystem/Resource/resSystem.h"
+
+namespace ksys::res {
+
+ResourceInfoContainer::ResourceInfoContainer() = default;
+
+ResourceInfoContainer::~ResourceInfoContainer() = default;
+
+// NON_MATCHING: LoadRequest field write order
+bool ResourceInfoContainer::loadResourceSizeTable() {
+    const auto load_res = [&] {
+        LoadRequest req;
+        req._68 = nullptr;
+        req.mArena = nullptr;
+        req.mPackHandle = nullptr;
+        req._22 = false;
+        req._20 = false;
+        req._21 = false;
+        req._26 = false;
+        req.mFileDevice = nullptr;
+        req.mLoadCompressed = true;
+        req._24 = false;
+        req._8 = true;
+        req.mLoadDataAlignment = 8;
+        req.mBufferSize = 0;
+        req.mEntryFactory = nullptr;
+        req.mAocFileDevice = nullptr;
+        req._34 = 0;
+        req.mRequester = "ResourceInfoContainer";
+        req.mPath = "System/Resource/ResourceSizeTable.product.rsizetable";
+        req._c = 1;
+        return sead::DynamicCast<Resource>(mRstbHandle.load(req.mPath, req));
+    };
+
+    const Resource* resource = load_res();
+    if (!resource)
+        return false;
+
+    const u8* data = resource->getRawData();
+
+    if (data[0] == 'R' && data[1] == 'S' && data[2] == 'T' && data[3] == 'B') {
+        stubbedLogFunction();
+        const auto num_entries = sead::BitUtil::bitCastPtr<s32>(data, 0x4);
+        const auto num_string_entries = sead::BitUtil::bitCastPtr<s32>(data, 0x8);
+
+        auto* entries_data =
+            reinterpret_cast<const ResEntry*>(reinterpret_cast<const u8*>(data) + 0xc);
+
+        if (num_entries >= 1) {
+            mEntries = {num_entries, entries_data};
+            entries_data += num_entries;
+        }
+
+        if (num_string_entries >= 1) {
+            mStringEntries = {num_string_entries,
+                              reinterpret_cast<const ResStringEntry*>(entries_data)};
+            // Log each conflict.
+            for (s32 i = 0; i < num_string_entries; ++i)
+                stubbedLogFunction();
+        }
+    } else {
+        // Assume that there is no string table.
+        stubbedLogFunction();
+        if (resource->getRawSize() != 0) {
+            const u32 num_entries = resource->getRawSize() / sizeof(ResEntry);
+            mEntries.setBuffer(num_entries,
+                               reinterpret_cast<const ResEntry*>(resource->getRawData()));
+        }
+    }
+
+    stubbedLogFunction();
+    stubbedLogFunction();
+    stubbedLogFunction();
+    return true;
+}
+
+// NON_MATCHING: missing mStringEntries(string_entry_idx).res_size > 0 check
+u32 ResourceInfoContainer::getResourceSize(const sead::SafeString& name) {
+    const u32 name_hash = sead::HashCRC32::calcStringHash(name.cstr());
+
+    const s32 entry_idx = mEntries.binarySearch({name_hash, 0}, ResEntry::compareT);
+    if (entry_idx >= 1 && mEntries(entry_idx).res_size > 0)
+        return mEntries(entry_idx).res_size;
+
+    const s32 string_entry_idx = mStringEntries.binarySearchC(
+        [&](const ResStringEntry& entry) { return entry.compare(name); });
+    if (string_entry_idx >= 1 && mStringEntries(string_entry_idx).res_size > 0)
+        return mStringEntries(string_entry_idx).res_size;
+
+    return 0;
+}
+
+namespace {
+[[gnu::noinline]] bool stringLessThan(const sead::SafeString& a, const sead::SafeString& b) {
+    return a < b;
+}
+}  // namespace
+
+[[gnu::noinline]] s32
+ResourceInfoContainer::ResStringEntry::compare(const sead::SafeString& name) const {
+    if (res_name > name)
+        return 1;
+    if (stringLessThan(res_name, name))
+        return -1;
+    return 0;
+}
+
+}  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resInfoContainer.h b/src/KingSystem/Resource/resInfoContainer.h
new file mode 100644
index 00000000..096e43fc
--- /dev/null
+++ b/src/KingSystem/Resource/resInfoContainer.h
@@ -0,0 +1,48 @@
+#pragma once
+
+#include <basis/seadTypes.h>
+#include <container/seadBuffer.h>
+#include <prim/seadSafeString.h>
+#include "KingSystem/Resource/resHandle.h"
+#include "KingSystem/Utils/Types.h"
+
+namespace ksys::res {
+
+class ResourceInfoContainer {
+public:
+    ResourceInfoContainer();
+    virtual ~ResourceInfoContainer();
+
+    bool loadResourceSizeTable();
+    u32 getResourceSize(const sead::SafeString& name);
+
+private:
+    struct ResEntry {
+        static s32 compareT(const ResEntry* lhs, const ResEntry* rhs) {
+            if (*lhs > *rhs)
+                return 1;
+            if (*lhs < *rhs)
+                return -1;
+            return 0;
+        }
+
+        bool operator<(const ResEntry& other) const { return res_name_hash < other.res_name_hash; }
+        bool operator>(const ResEntry& other) const { return res_name_hash > other.res_name_hash; }
+        u32 res_name_hash;
+        s32 res_size;
+    };
+
+    struct ResStringEntry {
+        s32 compare(const sead::SafeString& name) const;
+
+        char res_name[128];
+        s32 res_size;
+    };
+
+    Handle mRstbHandle;
+    sead::Buffer<const ResEntry> mEntries;
+    sead::Buffer<const ResStringEntry> mStringEntries;
+};
+KSYS_CHECK_SIZE_NX150(ResourceInfoContainer, 0x78);
+
+}  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resResourceMgrTask.h b/src/KingSystem/Resource/resResourceMgrTask.h
index 08051522..7a7524d9 100644
--- a/src/KingSystem/Resource/resResourceMgrTask.h
+++ b/src/KingSystem/Resource/resResourceMgrTask.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <framework/seadCalculateTask.h>
+#include <hostio/seadHostIONode.h>
 #include "KingSystem/Resource/resUnit.h"
 
 namespace sead {
@@ -17,7 +19,7 @@ class TaskThread;
 namespace ksys::res {
 
 // FIXME: very, very incomplete.
-class ResourceMgrTask {
+class ResourceMgrTask : public sead::CalculateTask, public sead::hostio::Node {
 public:
     static ResourceMgrTask* instance() { return sInstance; }
 
@@ -46,5 +48,7 @@ public:
 private:
     static ResourceMgrTask* sInstance;
 };
+KSYS_CHECK_SIZE_NX150(sead::TaskBase, 0xd0);
+KSYS_CHECK_SIZE_NX150(sead::MethodTreeNode, 0x98);
 
 }  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resSystem.cpp b/src/KingSystem/Resource/resSystem.cpp
new file mode 100644
index 00000000..be87826c
--- /dev/null
+++ b/src/KingSystem/Resource/resSystem.cpp
@@ -0,0 +1,17 @@
+#include "KingSystem/Resource/resSystem.h"
+
+namespace ksys::res {
+
+bool stubbedLogFunction() {
+    return true;
+}
+
+bool returnFalse() {
+    return false;
+}
+
+bool returnFalse2() {
+    return false;
+}
+
+}  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resSystem.h b/src/KingSystem/Resource/resSystem.h
index 4c27f2b4..c22ac378 100644
--- a/src/KingSystem/Resource/resSystem.h
+++ b/src/KingSystem/Resource/resSystem.h
@@ -10,4 +10,8 @@ bool stubbedLogFunction();
 // TODO: figure out what this is used for. Stubbed log function?
 bool returnFalse();
 
+// In release builds, the only thing this function does is return 0.
+// TODO: figure out what this is used for. Stubbed log function?
+bool returnFalse2();
+
 }  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resUnitPool.cpp b/src/KingSystem/Resource/resUnitPool.cpp
new file mode 100644
index 00000000..fd235159
--- /dev/null
+++ b/src/KingSystem/Resource/resUnitPool.cpp
@@ -0,0 +1,33 @@
+#include "KingSystem/Resource/resUnitPool.h"
+
+namespace ksys::res {
+
+ResourceUnitPool::ResourceUnitPool() = default;
+
+ResourceUnitPool::~ResourceUnitPool() = default;
+
+bool ResourceUnitPool::init() {
+    for (s32 i = 0; i < UnitCapacity; ++i)
+        mRingBuffer.pushBack(&mUnits[i]);
+    return true;
+}
+
+ResourceUnit* ResourceUnitPool::tryAlloc() {
+    if (mRingBuffer.empty())
+        return nullptr;
+    return mRingBuffer.popFront();
+}
+
+ResourceUnit* ResourceUnitPool::alloc() {
+    return mRingBuffer.popFront();
+}
+
+void ResourceUnitPool::free(ResourceUnit* unit) {
+    mRingBuffer.pushBack(unit);
+}
+
+void ResourceUnitPool::freeForSync(ResourceUnit* unit) {
+    free(unit);
+}
+
+}  // namespace ksys::res
diff --git a/src/KingSystem/Resource/resUnitPool.h b/src/KingSystem/Resource/resUnitPool.h
new file mode 100644
index 00000000..35e515ef
--- /dev/null
+++ b/src/KingSystem/Resource/resUnitPool.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <container/seadRingBuffer.h>
+#include "KingSystem/Resource/resUnit.h"
+#include "KingSystem/Utils/Types.h"
+
+namespace ksys::res {
+
+class ResourceUnitPool {
+public:
+    ResourceUnitPool();
+    virtual ~ResourceUnitPool();
+
+    ResourceUnitPool(const ResourceUnitPool&) = delete;
+    ResourceUnitPool& operator=(const ResourceUnitPool&) = delete;
+
+    bool init();
+
+    ResourceUnit* tryAlloc();
+    ResourceUnit* alloc();
+
+    void free(ResourceUnit* unit);
+    void freeForSync(ResourceUnit* unit);
+
+private:
+    static constexpr s32 UnitCapacity = 9000;
+
+    ResourceUnit mUnits[UnitCapacity];
+    sead::FixedRingBuffer<ResourceUnit*, UnitCapacity> mRingBuffer;
+};
+KSYS_CHECK_SIZE_NX150(ResourceUnitPool, 0x9c01a0);
+
+}  // namespace ksys::res