diff --git a/data/status_query.yml b/data/status_query.yml
index 29e8d086..416f76f6 100644
--- a/data/status_query.yml
+++ b/data/status_query.yml
@@ -75,7 +75,7 @@ query::CheckFadeState:
 query::CheckFame:
   status: pending
 query::CheckFlag:
-  status: pending
+  status: done
 query::CheckGameDataFloat:
   status: done
 query::CheckGameDataInt:
diff --git a/data/uking_functions.csv b/data/uking_functions.csv
index 9225c58d..c6130469 100644
--- a/data/uking_functions.csv
+++ b/data/uking_functions.csv
@@ -40795,7 +40795,7 @@
 0x000000710068cd44,AI_Query_CheckFlag::ctor,72,_ZN5uking5query9CheckFlagC1ERKN4ksys3act2ai5Query7InitArgE
 0x000000710068cd8c,AI_Query_CheckFlag::dtor,20,_ZN5uking5query9CheckFlagD1Ev
 0x000000710068cda0,AI_Query_CheckFlag::dtorDelete,52,_ZN5uking5query9CheckFlagD0Ev
-0x000000710068cdd4,AI_Query_CheckFlag::doQuery,72,
+0x000000710068cdd4,AI_Query_CheckFlag::doQuery,72,_ZN5uking5query9CheckFlag7doQueryEv
 0x000000710068ce1c,AI_Query_CheckFlag::m10,64,_ZN5uking5query9CheckFlag10loadParamsERKN4evfl8QueryArgE
 0x000000710068ce5c,AI_Query_CheckFlag::loadParams,64,_ZN5uking5query9CheckFlag10loadParamsEv
 0x000000710068ce9c,AI_Query_CheckFlag::rtti1,204,_ZNK5uking5query9CheckFlag27checkDerivedRuntimeTypeInfoEPKN4sead15RuntimeTypeInfo9InterfaceE
diff --git a/src/Game/AI/Query/queryCheckFlag.cpp b/src/Game/AI/Query/queryCheckFlag.cpp
index 17f28b79..8549f3df 100644
--- a/src/Game/AI/Query/queryCheckFlag.cpp
+++ b/src/Game/AI/Query/queryCheckFlag.cpp
@@ -1,5 +1,6 @@
 #include "Game/AI/Query/queryCheckFlag.h"
 #include <evfl/query.h>
+#include "KingSystem/GameData/gdtManager.h"
 
 namespace uking::query {
 
@@ -7,9 +8,10 @@ CheckFlag::CheckFlag(const InitArg& arg) : ksys::act::ai::Query(arg) {}
 
 CheckFlag::~CheckFlag() = default;
 
-// FIXME: implement
 int CheckFlag::doQuery() {
-    return -1;
+    bool value = false;
+    ksys::gdt::Manager::instance()->getParamBypassPerm().get().getBool(&value, mFlagName);
+    return value;
 }
 
 void CheckFlag::loadParams(const evfl::QueryArg& arg) {