diff --git a/data/uking_functions.csv b/data/uking_functions.csv
index 84f10258..b66aa1ee 100644
--- a/data/uking_functions.csv
+++ b/data/uking_functions.csv
@@ -71165,14 +71165,14 @@
 0x0000007100d0d730,sub_7100D0D730,8,
 0x0000007100d0d738,_ZN2nn3nex20PseudoGlobalVariableINS0_38SecureConnectionServiceDDLDeclarationsEE13ResetContextsEv,140,
 0x0000007100d0d7c4,sub_7100D0D7C4,196,
-0x0000007100d0d888,sub_7100D0D888,100,
-0x0000007100d0d8ec,sub_7100D0D8EC,108,
-0x0000007100d0d958,Account::createInstance,156,
-0x0000007100d0d9f4,sub_7100D0D9F4,80,
-0x0000007100d0da44,sub_7100D0DA44,68,
-0x0000007100d0da88,Account::init,96,
-0x0000007100d0dae8,Account::__auto0,8,
-0x0000007100d0daf0,Account::getUserId,28,
+0x0000007100d0d888,sub_7100D0D888,100,_ZN4ksys7Account18SingletonDisposer_D2Ev
+0x0000007100d0d8ec,sub_7100D0D8EC,108,_ZN4ksys7Account18SingletonDisposer_D0Ev
+0x0000007100d0d958,Account::createInstance,156,_ZN4ksys7Account14createInstanceEPN4sead4HeapE
+0x0000007100d0d9f4,sub_7100D0D9F4,80,_ZN4ksys7AccountD1Ev
+0x0000007100d0da44,sub_7100D0DA44,68,_ZN4ksys7AccountD0Ev
+0x0000007100d0da88,Account::init,96,_ZN4ksys7Account4initEPN4sead4HeapE
+0x0000007100d0dae8,Account::__auto0,8,_ZNK4ksys7Account13getUserHandleEv
+0x0000007100d0daf0,Account::getUserId,28,_ZNK4ksys7Account9getUserIdEPN2nn7account3UidE
 0x0000007100d0db0c,ActorAccessor::ctorCopy,144,_ZN4ksys3act20ActorConstDataAccess12acquireActorERKNS0_24ActorLinkConstDataAccessE
 0x0000007100d0db9c,ActorAccessor::hasActor,16,_ZNK4ksys3act20ActorConstDataAccess7hasProcEPNS0_8BaseProcE
 0x0000007100d0dbac,act::fieldx8IsEqualToActorFieldx60,144,_ZNK4ksys3act20ActorConstDataAccess7hasProcERKNS0_12BaseProcLinkE
diff --git a/lib/NintendoSDK b/lib/NintendoSDK
index 33613dbd..3765a6af 160000
--- a/lib/NintendoSDK
+++ b/lib/NintendoSDK
@@ -1 +1 @@
-Subproject commit 33613dbdf486d04637351600cfe9eeb434b364a8
+Subproject commit 3765a6afa665dc9e787a50e46e70614a0b88ff4f
diff --git a/src/KingSystem/System/Account.cpp b/src/KingSystem/System/Account.cpp
new file mode 100644
index 00000000..540914b8
--- /dev/null
+++ b/src/KingSystem/System/Account.cpp
@@ -0,0 +1,43 @@
+#include "KingSystem/System/Account.h"
+#include <nn/account.h>
+
+namespace ksys {
+
+SEAD_SINGLETON_DISPOSER_IMPL(Account)
+
+Account::~Account() {
+    if (mFlags.isOn(Flag::HasUserHandle)) {
+        if (mUserHandle) {
+            delete mUserHandle;
+            mUserHandle = nullptr;
+        }
+        mFlags.reset(Flag::HasUserHandle);
+    }
+}
+
+void Account::init(sead::Heap* heap) {
+    mUserHandle = new (heap) nn::account::UserHandle{};
+
+    nn::account::Initialize();
+
+    if (mFlags.isOff(Flag::HasOpenedUserSuccessfully)) {
+        const auto result = nn::account::OpenPreselectedUser(mUserHandle);
+        if (result.IsSuccess())
+            mFlags.set(Flag::HasOpenedUserSuccessfully);
+    }
+
+    mFlags.set(Flag::HasUserHandle);
+}
+
+nn::account::UserHandle* Account::getUserHandle() const {
+    return mUserHandle;
+}
+
+void Account::getUserId(nn::account::Uid* uid) const {
+    if (mUserHandle)
+        nn::account::GetUserId(uid, *mUserHandle);
+    else
+        *uid = {};
+}
+
+}  // namespace ksys
diff --git a/src/KingSystem/System/Account.h b/src/KingSystem/System/Account.h
new file mode 100644
index 00000000..cf6ee121
--- /dev/null
+++ b/src/KingSystem/System/Account.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <heap/seadDisposer.h>
+#include <prim/seadTypedBitFlag.h>
+#include "KingSystem/Utils/Types.h"
+
+namespace nn::account {
+class Uid;
+class UserHandle;
+}  // namespace nn::account
+
+namespace ksys {
+
+class Account {
+    SEAD_SINGLETON_DISPOSER(Account)
+    Account() = default;
+    virtual ~Account();
+
+public:
+    void init(sead::Heap* heap);
+
+    nn::account::UserHandle* getUserHandle() const;
+    void getUserId(nn::account::Uid* uid) const;
+
+private:
+    enum class Flag : u8 {
+        HasUserHandle = 0x1,
+        HasOpenedUserSuccessfully = 0x2,
+    };
+
+    void* _28 = nullptr;
+    sead::TypedBitFlag<Flag> mFlags;
+    nn::account::UserHandle* mUserHandle = nullptr;
+};
+KSYS_CHECK_SIZE_NX150(Account, 0x40);
+
+}  // namespace ksys
diff --git a/src/KingSystem/System/CMakeLists.txt b/src/KingSystem/System/CMakeLists.txt
index f2a045ba..51b8a1af 100644
--- a/src/KingSystem/System/CMakeLists.txt
+++ b/src/KingSystem/System/CMakeLists.txt
@@ -1,4 +1,6 @@
 target_sources(uking PRIVATE
+  Account.cpp
+  Account.h
   OverlayArena.cpp
   OverlayArena.h
   OverlayArenaSystem.cpp