diff --git a/src/core/hle/service/acc/acc_u0.cpp b/src/core/hle/service/acc/acc_u0.cpp
index 0f8bbf1468..ce61805a26 100644
--- a/src/core/hle/service/acc/acc_u0.cpp
+++ b/src/core/hle/service/acc/acc_u0.cpp
@@ -9,16 +9,64 @@
 namespace Service {
 namespace Account {
 
+class IProfile final : public ServiceFramework<IProfile> {
+public:
+    IProfile() : ServiceFramework("IProfile") {
+        static const FunctionInfo functions[] = {
+            {0, &IProfile::Get, "Get"},
+            {1, &IProfile::GetBase, "GetBase"},
+        };
+        RegisterHandlers(functions);
+    }
+
+private:
+    void Get(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service, "(STUBBED) called");
+        UserData user_data{};
+        IPC::RequestBuilder rb{ctx, 11};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushRaw(user_data);
+    }
+
+    void GetBase(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service, "(STUBBED) called");
+        ProfileBase profile_base{};
+        IPC::RequestBuilder rb{ctx, 11};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushRaw(profile_base);
+    }
+};
+
+class IManagerForApplication final : public ServiceFramework<IManagerForApplication> {
+public:
+    IManagerForApplication() : ServiceFramework("IProfile") {
+        static const FunctionInfo functions[] = {
+            {0, &IManagerForApplication::CheckAvailability, "CheckAvailability"},
+        };
+        RegisterHandlers(functions);
+    }
+
+private:
+    void CheckAvailability(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service, "(STUBBED) called");
+        IPC::RequestBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(true); // TODO: Check when this is supposed to return true and when not
+    }
+};
+
 void ACC_U0::GetUserExistence(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service, "(STUBBED) called");
     IPC::RequestBuilder rb{ctx, 2};
     rb.Push(RESULT_SUCCESS);
+    rb.Push(true); // TODO: Check when this is supposed to return true and when not
 }
 
 void ACC_U0::GetProfile(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service, "(STUBBED) called");
-    IPC::RequestBuilder rb{ctx, 2};
+    IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
     rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IProfile>();
+    LOG_DEBUG(Service, "called");
 }
 
 void ACC_U0::InitializeApplicationInfo(Kernel::HLERequestContext& ctx) {
@@ -28,9 +76,10 @@ void ACC_U0::InitializeApplicationInfo(Kernel::HLERequestContext& ctx) {
 }
 
 void ACC_U0::GetBaasAccountManagerForApplication(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service, "(STUBBED) called");
-    IPC::RequestBuilder rb{ctx, 2};
+    IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
     rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IManagerForApplication>();
+    LOG_DEBUG(Service, "called");
 }
 
 ACC_U0::ACC_U0() : ServiceFramework("acc:u0") {
diff --git a/src/core/hle/service/acc/acc_u0.h b/src/core/hle/service/acc/acc_u0.h
index db5bcc4649..51676e8594 100644
--- a/src/core/hle/service/acc/acc_u0.h
+++ b/src/core/hle/service/acc/acc_u0.h
@@ -9,6 +9,18 @@
 namespace Service {
 namespace Account {
 
+// TODO: RE this structure
+struct UserData {
+    INSERT_PADDING_BYTES(0x80);
+};
+static_assert(sizeof(UserData) == 0x80, "UserData structure has incorrect size");
+
+// TODO: RE this structure
+struct ProfileBase {
+    INSERT_PADDING_BYTES(0x38);
+};
+static_assert(sizeof(ProfileBase) == 0x38, "ProfileBase structure has incorrect size");
+
 class ACC_U0 final : public ServiceFramework<ACC_U0> {
 public:
     ACC_U0();
diff --git a/src/core/hle/service/am/applet_oe.cpp b/src/core/hle/service/am/applet_oe.cpp
index 1807900367..6a2c4bce1d 100644
--- a/src/core/hle/service/am/applet_oe.cpp
+++ b/src/core/hle/service/am/applet_oe.cpp
@@ -318,7 +318,7 @@ private:
     void GetDesiredLanguage(Kernel::HLERequestContext& ctx) {
         IPC::RequestBuilder rb{ctx, 4};
         rb.Push(RESULT_SUCCESS);
-        rb.Push<u64>(1); // English?
+        rb.Push<u64>(SystemLanguage::English);
         LOG_WARNING(Service, "(STUBBED) called");
     }
 
diff --git a/src/core/hle/service/am/applet_oe.h b/src/core/hle/service/am/applet_oe.h
index beb75bf2ad..6ee5b0e9f8 100644
--- a/src/core/hle/service/am/applet_oe.h
+++ b/src/core/hle/service/am/applet_oe.h
@@ -10,6 +10,12 @@
 namespace Service {
 namespace AM {
 
+// TODO: Add more languages
+enum SystemLanguage {
+    Japanese = 0,
+    English = 1,
+};
+
 class AppletOE final : public ServiceFramework<AppletOE> {
 public:
     AppletOE();
diff --git a/src/core/hle/service/set/set.cpp b/src/core/hle/service/set/set.cpp
index 08671dfd60..3715acd742 100644
--- a/src/core/hle/service/set/set.cpp
+++ b/src/core/hle/service/set/set.cpp
@@ -13,9 +13,7 @@ namespace Service {
 namespace Set {
 
 void SET::GetAvailableLanguageCodes(Kernel::HLERequestContext& ctx) {
-    constexpr std::array<u8, 13> lang_codes{{
-        0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-    }};
+    constexpr std::array<u8, 13> lang_codes{};
 
     const auto& output_buffer = ctx.BufferDescriptorC()[0];