diff --git a/lib/sead b/lib/sead
index 9fef13c1..42aea99f 160000
--- a/lib/sead
+++ b/lib/sead
@@ -1 +1 @@
-Subproject commit 9fef13c1348038b38351b7f1c47a7490fd4dc8ab
+Subproject commit 42aea99fb278f1017e4b07a29fe22e6f31448d15
diff --git a/src/KingSystem/ActorSystem/actActorUtil.cpp b/src/KingSystem/ActorSystem/actActorUtil.cpp
index 443e4046..75de3637 100644
--- a/src/KingSystem/ActorSystem/actActorUtil.cpp
+++ b/src/KingSystem/ActorSystem/actActorUtil.cpp
@@ -533,8 +533,8 @@ bool isAirOctaWoodPlatformDlc(const sead::SafeString& name) {
 }
 
 void getRevivalGridPosition(const sead::Vector3f& pos, int* col1, int* row1, int* col2, int* row2) {
-    const int col = sead::clamp((int(pos.x) + 5000) / 1000, 0, 9);
-    const int row = sead::clamp((int(pos.z) + 4000) / 1000, 0, 7);
+    const int col = sead::Mathi::clamp((int(pos.x) + 5000) / 1000, 0, 9);
+    const int row = sead::Mathi::clamp((int(pos.z) + 4000) / 1000, 0, 7);
 
     const auto x = (float(col) + 0.5f) * 1000.0f - 5000.0f;
     const auto z = (float(row) + 0.5f) * 1000.0f - 4000.0f;
diff --git a/src/KingSystem/ActorSystem/actInfoData.cpp b/src/KingSystem/ActorSystem/actInfoData.cpp
index 94fb092d..6a4b1c21 100644
--- a/src/KingSystem/ActorSystem/actInfoData.cpp
+++ b/src/KingSystem/ActorSystem/actInfoData.cpp
@@ -587,7 +587,7 @@ bool InfoData::getYLimitAlgorithm(const char** algorithm, const char* actor) con
 f32 InfoData::getAabbNorm(const char* actor, bool x) const {
     sead::Vector3f min, max;
     if (getAAbbMinMax(actor, &min, &max, x))
-        return sead::norm2(max - min);
+        return (max - min).length();
     return 0.0;
 }
 
diff --git a/src/KingSystem/Ecosystem/ecoSystem.cpp b/src/KingSystem/Ecosystem/ecoSystem.cpp
index 6f8252bf..83fd3c8c 100644
--- a/src/KingSystem/Ecosystem/ecoSystem.cpp
+++ b/src/KingSystem/Ecosystem/ecoSystem.cpp
@@ -32,14 +32,14 @@ void Ecosystem::calc() {}
 // FP instructions rearranged.
 #ifdef NON_MATCHING
 s32 Ecosystem::getMapArea(const EcoMapInfo& info, f32 posX, f32 posZ) const {
-    posX = sead::clamp(posX, -5000.0F, 4999.0F);
-    posZ = sead::clamp(posZ, -4000.0F, 4000.0F);
+    posX = sead::Mathf::clamp(posX, -5000.0F, 4999.0F);
+    posZ = sead::Mathf::clamp(posZ, -4000.0F, 4000.0F);
     f32 epsilon1 = (posX + 5000.0F >= 0.0F) ? 0.5F : -0.5F;
     f32 epsilon2 = (posZ + 4000.0F >= 0.0F) ? 0.5F : -0.5F;
     s32 x = posX + 5000.0F + epsilon1;
     s32 z = (posZ + 4000.0F + epsilon2) / info.mHeader->divisor;
 
-    s32 row = sead::clamp(z, (s32)0, info.mHeader->num_rows - 2);
+    s32 row = sead::Mathi::clamp(z, 0, info.mHeader->num_rows - 2);
 
     if (info.mHeader->divisor == 10)
         x = x / 10;
diff --git a/src/KingSystem/GameData/gdtTriggerParam.cpp b/src/KingSystem/GameData/gdtTriggerParam.cpp
index ff8089cc..82ab81dd 100644
--- a/src/KingSystem/GameData/gdtTriggerParam.cpp
+++ b/src/KingSystem/GameData/gdtTriggerParam.cpp
@@ -1822,8 +1822,8 @@ bool TriggerParam::shouldSkipRevivingShopItem(bool* is_shop_item, u32 flag_hash,
             if (!act::ActorSystem::instance()->getAutoPlacementActorPos(dealer, &pos))
                 return false;
 
-            col = sead::clamp((int(pos.x) + 5000) / 1000, 0, 9);
-            row = sead::clamp((int(pos.z) + 4000) / 1000, 0, 7);
+            col = sead::Mathi::clamp((int(pos.x) + 5000) / 1000, 0, 9);
+            row = sead::Mathi::clamp((int(pos.z) + 4000) / 1000, 0, 7);
         } else {
             num = areas.getSize();
             if (areas.tryGetIterByIndex(&iter, 0)) {
diff --git a/src/KingSystem/Physics/SupportBone/physSupportBoneResource.cpp b/src/KingSystem/Physics/SupportBone/physSupportBoneResource.cpp
index a33031e0..b7b2dbd9 100644
--- a/src/KingSystem/Physics/SupportBone/physSupportBoneResource.cpp
+++ b/src/KingSystem/Physics/SupportBone/physSupportBoneResource.cpp
@@ -238,17 +238,17 @@ void SupportBoneResource::BaseBone::postRead_() {
     sead::Vector3f up_local = up.ref();
     aim_local.normalize();
 
-    side = sead::cross(aim_local, up_local);
+    side.setCross(aim_local, up_local);
     // XXX: this looks like a hack. Why does this not match without an inline function?
     [&] { side.normalize(); }();
 
-    up_local = sead::cross(side, aim_local);
+    up_local.setCross(side, aim_local);
     up_local.normalize();
     up = up_local;
     aim = aim_local;
 
     base_rotate->normalize();
-    base_rotate->invert(&reverse_rotate);
+    base_rotate->inverse(&reverse_rotate);
 }
 
 }  // namespace ksys::phys
diff --git a/src/KingSystem/Resource/resOffsetReadFileDevice.cpp b/src/KingSystem/Resource/resOffsetReadFileDevice.cpp
index 5bc3f9ac..ec284908 100644
--- a/src/KingSystem/Resource/resOffsetReadFileDevice.cpp
+++ b/src/KingSystem/Resource/resOffsetReadFileDevice.cpp
@@ -45,8 +45,8 @@ u8* OffsetReadFileDevice::doLoad_(sead::FileDevice::LoadArg& arg) {
                 return nullptr;
             }
         } else {
-            bytesToRead = mOffsetReadOffset + sead::Mathi::roundUpPow2Positive(
-                                                  fileSize, FileDevice::cBufferMinAlignment);
+            bytesToRead = mOffsetReadOffset +
+                          sead::Mathi::roundUpPow2(fileSize, FileDevice::cBufferMinAlignment);
         }
     }
 
@@ -55,7 +55,7 @@ u8* OffsetReadFileDevice::doLoad_(sead::FileDevice::LoadArg& arg) {
 
     if (buf == nullptr) {
         const s32 sign = (arg.alignment < 0) ? -1 : 1;
-        s32 alignment = sead::abs(arg.alignment);
+        s32 alignment = sead::Mathi::abs(arg.alignment);
         alignment = sign * ((alignment < cBufferMinAlignment) ? cBufferMinAlignment : alignment);
 
         sead::Heap* heap = arg.heap;
diff --git a/src/KingSystem/System/VFR.h b/src/KingSystem/System/VFR.h
index 10a8bcaa..552d9949 100644
--- a/src/KingSystem/System/VFR.h
+++ b/src/KingSystem/System/VFR.h
@@ -95,7 +95,7 @@ public:
         const auto f = getLerpFactor(t);
         const auto max_d = instance()->getDeltaTime() * max_delta;
         const auto diff = b - *value;
-        const auto d = f * sead::absf(diff);
+        const auto d = f * sead::Mathf::abs(diff);
         if (d > max_d)
             *value += diff < 0.0 ? -max_d : max_d;
         else
@@ -109,9 +109,9 @@ public:
         const auto min_d = instance()->getDeltaTime() * min_delta;
 
         const auto diff = b - *value;
-        const auto d = f * sead::absf(diff);
+        const auto d = f * sead::Mathf::abs(diff);
 
-        if (sead::absf(diff) <= min_d) {
+        if (sead::Mathf::abs(diff) <= min_d) {
             *value = b;
             return true;
         }
diff --git a/src/KingSystem/System/VFRValue.cpp b/src/KingSystem/System/VFRValue.cpp
index 68601898..6915fbdd 100644
--- a/src/KingSystem/System/VFRValue.cpp
+++ b/src/KingSystem/System/VFRValue.cpp
@@ -75,7 +75,7 @@ void VFRVec3f::lerp(const sead::Vector3f& b, f32 t) {
 bool VFRVec3f::chase(const sead::Vector3f& target, f32 t) {
     const auto delta = VFR::instance()->getDeltaTime() * t;
     const auto diff = target - value;
-    const auto norm = sead::norm2(diff);
+    const auto norm = diff.length();
 
     if (norm <= delta) {
         sead::MemUtil::copy(&value, &target, sizeof(value));
@@ -101,12 +101,12 @@ void VFRValue::setToMin(const f32& min) {
 void VFRValue::clamp(const f32& min, const f32& max) {
     const auto a = min;
     const auto b = max;
-    value = sead::clamp(value, a, b);
+    value = sead::Mathf::clamp(value, a, b);
 }
 
 void VFRVec3f::normalize(f32 new_norm) {
-    if (sead::norm2(value) > new_norm) {
-        const auto norm = sead::norm2(value);
+    if (value.length() > new_norm) {
+        const auto norm = value.length();
         if (norm > 0.0)
             value *= new_norm / norm;
     }
diff --git a/src/KingSystem/World/worldManager.cpp b/src/KingSystem/World/worldManager.cpp
index 0dc18cef..b95b62e7 100644
--- a/src/KingSystem/World/worldManager.cpp
+++ b/src/KingSystem/World/worldManager.cpp
@@ -796,11 +796,11 @@ bool Manager::isGerudoDesertClimate() const {
 }
 
 bool Manager::hasCameraOrPlayerMoved(float distance_threshold) const {
-    const auto camera_dist = sead::norm2(mCameraPos - mPrevCameraPos);
-    const auto player_dist = sead::norm2(mPlayerPos - mPrevPlayerPos);
+    const auto camera_dist = (mCameraPos - mPrevCameraPos).length();
+    const auto player_dist = (mPlayerPos - mPrevPlayerPos).length();
     const bool moved = player_dist >= distance_threshold || camera_dist >= distance_threshold;
 
-    if (sead::norm2(mPlayerPos - mPrevPlayerPos) <= 100.0 &&
+    if ((mPlayerPos - mPrevPlayerPos).length() <= 100.0 &&
         evt::Manager::instance()->hasActiveEvent()) {
         return false;
     }
@@ -830,7 +830,7 @@ float Manager::getDungeonLightLongitude() const {
 
 void Manager::setCameraDistForRemainsElectric(sead::Vector3f pos) {
     _7ac = 10;
-    _770 = sead::norm2(mCameraPos - pos);
+    _770 = (mCameraPos - pos).length();
 }
 
 void Manager::setFocusDist(float dist) {
@@ -888,7 +888,7 @@ void Manager::setIgnitedLevel(int level, float radius, sead::Vector3f center) {
     const sead::Vector3f unk_center{-2004, mPlayerPos.y, 1710};
     mIgnitedLevel = level;
 
-    if (sead::norm2(mPlayerPos - unk_center) < 20.0) {
+    if ((mPlayerPos - unk_center).length() < 20.0) {
         mIgnitedCenter = unk_center;
         mIgnitedRadius = 7.0;
     }
diff --git a/src/KingSystem/World/worldSkyMgr.cpp b/src/KingSystem/World/worldSkyMgr.cpp
index 8a1afbbd..7e6a1d97 100644
--- a/src/KingSystem/World/worldSkyMgr.cpp
+++ b/src/KingSystem/World/worldSkyMgr.cpp
@@ -5,12 +5,6 @@
 
 namespace ksys::world {
 
-static void normalize(sead::Vector3f& v) {
-    const auto norm = sead::norm2(v);
-    if (norm > 0.0)
-        v *= 1.0f / norm;
-}
-
 SkyMgr::SkyMgr() {
     _20._18 = {0, 0, 0};
     _20._24 = {0, 0, 0};
@@ -321,7 +315,7 @@ SkyMgr::SkyMgr() {
     _3f14.x = -0.0;
     _3f14.y = -std::sinf(0.82903141);
     _3f14.z = -std::cosf(0.82903141);
-    normalize(_3f14);
+    _3f14.normalize();
     _3f44 = 0.0;
     _3f48 = 0.0;
     _3f4c = 0.2;