diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 405dd5ab1..d5206eeae 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -743,6 +743,8 @@ add_library(core STATIC
     hle/service/ns/account_proxy_interface.h
     hle/service/ns/application_version_interface.cpp
     hle/service/ns/application_version_interface.h
+    hle/service/ns/content_management_interface.cpp
+    hle/service/ns/content_management_interface.h
     hle/service/ns/ecommerce_interface.cpp
     hle/service/ns/ecommerce_interface.h
     hle/service/ns/factory_reset_interface.cpp
diff --git a/src/core/hle/service/ns/content_management_interface.cpp b/src/core/hle/service/ns/content_management_interface.cpp
new file mode 100644
index 000000000..69bb3f6e4
--- /dev/null
+++ b/src/core/hle/service/ns/content_management_interface.cpp
@@ -0,0 +1,72 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/common_funcs.h"
+#include "core/core.h"
+#include "core/hle/service/cmif_serialization.h"
+#include "core/hle/service/filesystem/filesystem.h"
+#include "core/hle/service/ns/content_management_interface.h"
+#include "core/hle/service/ns/ns_types.h"
+
+namespace Service::NS {
+
+IContentManagementInterface::IContentManagementInterface(Core::System& system_)
+    : ServiceFramework{system_, "IContentManagementInterface"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {11, D<&IContentManagementInterface::CalculateApplicationOccupiedSize>, "CalculateApplicationOccupiedSize"},
+        {43, D<&IContentManagementInterface::CheckSdCardMountStatus>, "CheckSdCardMountStatus"},
+        {47, D<&IContentManagementInterface::GetTotalSpaceSize>, "GetTotalSpaceSize"},
+        {48, D<&IContentManagementInterface::GetFreeSpaceSize>, "GetFreeSpaceSize"},
+        {600, nullptr, "CountApplicationContentMeta"},
+        {601, nullptr, "ListApplicationContentMetaStatus"},
+        {605, nullptr, "ListApplicationContentMetaStatusWithRightsCheck"},
+        {607, nullptr, "IsAnyApplicationRunning"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IContentManagementInterface::~IContentManagementInterface() = default;
+
+Result IContentManagementInterface::CalculateApplicationOccupiedSize(
+    Out<ApplicationOccupiedSize> out_size, u64 application_id) {
+    LOG_WARNING(Service_NS, "(STUBBED) called, application_id={:016X}", application_id);
+
+    using namespace Common::Literals;
+
+    constexpr ApplicationOccupiedSizeEntity stub_entity{
+        .storage_id = FileSys::StorageId::SdCard,
+        .app_size = 8_GiB,
+        .patch_size = 2_GiB,
+        .aoc_size = 12_MiB,
+    };
+
+    for (auto& entity : out_size->entities) {
+        entity = stub_entity;
+    }
+
+    R_SUCCEED();
+}
+
+Result IContentManagementInterface::CheckSdCardMountStatus() {
+    LOG_WARNING(Service_NS, "(STUBBED) called");
+    R_SUCCEED();
+}
+
+Result IContentManagementInterface::GetTotalSpaceSize(Out<s64> out_total_space_size,
+                                                      FileSys::StorageId storage_id) {
+    LOG_INFO(Service_NS, "(STUBBED) called, storage_id={}", storage_id);
+    *out_total_space_size = system.GetFileSystemController().GetTotalSpaceSize(storage_id);
+    R_SUCCEED();
+}
+
+Result IContentManagementInterface::GetFreeSpaceSize(Out<s64> out_free_space_size,
+                                                     FileSys::StorageId storage_id) {
+    LOG_INFO(Service_NS, "(STUBBED) called, storage_id={}", storage_id);
+    *out_free_space_size = system.GetFileSystemController().GetFreeSpaceSize(storage_id);
+    R_SUCCEED();
+}
+
+} // namespace Service::NS
diff --git a/src/core/hle/service/ns/content_management_interface.h b/src/core/hle/service/ns/content_management_interface.h
new file mode 100644
index 000000000..b2242be2b
--- /dev/null
+++ b/src/core/hle/service/ns/content_management_interface.h
@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/ns/ns_types.h"
+#include "core/hle/service/service.h"
+
+namespace Service::NS {
+
+class IContentManagementInterface final : public ServiceFramework<IContentManagementInterface> {
+public:
+    explicit IContentManagementInterface(Core::System& system_);
+    ~IContentManagementInterface() override;
+
+private:
+    Result CalculateApplicationOccupiedSize(Out<ApplicationOccupiedSize> out_size,
+                                            u64 application_id);
+    Result CheckSdCardMountStatus();
+    Result GetTotalSpaceSize(Out<s64> out_total_space_size, FileSys::StorageId storage_id);
+    Result GetFreeSpaceSize(Out<s64> out_free_space_size, FileSys::StorageId storage_id);
+};
+
+} // namespace Service::NS
diff --git a/src/core/hle/service/ns/ns.cpp b/src/core/hle/service/ns/ns.cpp
index 5188699ad..e8b13213d 100644
--- a/src/core/hle/service/ns/ns.cpp
+++ b/src/core/hle/service/ns/ns.cpp
@@ -13,6 +13,7 @@
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/ns/account_proxy_interface.h"
 #include "core/hle/service/ns/application_version_interface.h"
+#include "core/hle/service/ns/content_management_interface.h"
 #include "core/hle/service/ns/ecommerce_interface.h"
 #include "core/hle/service/ns/factory_reset_interface.h"
 #include "core/hle/service/ns/language.h"
@@ -464,48 +465,6 @@ Result IApplicationManagerInterface::ConvertApplicationLanguageToLanguageCode(
     return ResultSuccess;
 }
 
-IContentManagementInterface::IContentManagementInterface(Core::System& system_)
-    : ServiceFramework{system_, "IContentManagementInterface"} {
-    // clang-format off
-    static const FunctionInfo functions[] = {
-        {11, nullptr, "CalculateApplicationOccupiedSize"},
-        {43, nullptr, "CheckSdCardMountStatus"},
-        {47, &IContentManagementInterface::GetTotalSpaceSize, "GetTotalSpaceSize"},
-        {48, &IContentManagementInterface::GetFreeSpaceSize, "GetFreeSpaceSize"},
-        {600, nullptr, "CountApplicationContentMeta"},
-        {601, nullptr, "ListApplicationContentMetaStatus"},
-        {605, nullptr, "ListApplicationContentMetaStatusWithRightsCheck"},
-        {607, nullptr, "IsAnyApplicationRunning"},
-    };
-    // clang-format on
-
-    RegisterHandlers(functions);
-}
-
-IContentManagementInterface::~IContentManagementInterface() = default;
-
-void IContentManagementInterface::GetTotalSpaceSize(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    const auto storage{rp.PopEnum<FileSys::StorageId>()};
-
-    LOG_INFO(Service_Capture, "called, storage={}", storage);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(ResultSuccess);
-    rb.Push<u64>(system.GetFileSystemController().GetTotalSpaceSize(storage));
-}
-
-void IContentManagementInterface::GetFreeSpaceSize(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    const auto storage{rp.PopEnum<FileSys::StorageId>()};
-
-    LOG_INFO(Service_Capture, "called, storage={}", storage);
-
-    IPC::ResponseBuilder rb{ctx, 4};
-    rb.Push(ResultSuccess);
-    rb.Push<u64>(system.GetFileSystemController().GetFreeSpaceSize(storage));
-}
-
 IDocumentInterface::IDocumentInterface(Core::System& system_)
     : ServiceFramework{system_, "IDocumentInterface"} {
     // clang-format off
diff --git a/src/core/hle/service/ns/ns.h b/src/core/hle/service/ns/ns.h
index 853896b48..27ccda38d 100644
--- a/src/core/hle/service/ns/ns.h
+++ b/src/core/hle/service/ns/ns.h
@@ -32,16 +32,6 @@ private:
     void ConvertApplicationLanguageToLanguageCode(HLERequestContext& ctx);
 };
 
-class IContentManagementInterface final : public ServiceFramework<IContentManagementInterface> {
-public:
-    explicit IContentManagementInterface(Core::System& system_);
-    ~IContentManagementInterface() override;
-
-private:
-    void GetTotalSpaceSize(HLERequestContext& ctx);
-    void GetFreeSpaceSize(HLERequestContext& ctx);
-};
-
 class IDocumentInterface final : public ServiceFramework<IDocumentInterface> {
 public:
     explicit IDocumentInterface(Core::System& system_);
diff --git a/src/core/hle/service/ns/ns_types.h b/src/core/hle/service/ns/ns_types.h
index 1b97ac816..b39181856 100644
--- a/src/core/hle/service/ns/ns_types.h
+++ b/src/core/hle/service/ns/ns_types.h
@@ -4,6 +4,7 @@
 #pragma once
 
 #include "common/common_funcs.h"
+#include "core/file_sys/romfs_factory.h"
 
 namespace Service::NS {
 
@@ -59,4 +60,17 @@ struct ApplicationViewWithPromotionInfo {
     PromotionInfo promotion; ///< \ref NsPromotionInfo
 };
 
+struct ApplicationOccupiedSizeEntity {
+    FileSys::StorageId storage_id;
+    u64 app_size;
+    u64 patch_size;
+    u64 aoc_size;
+};
+static_assert(sizeof(ApplicationOccupiedSizeEntity) == 0x20,
+              "ApplicationOccupiedSizeEntity has incorrect size.");
+
+struct ApplicationOccupiedSize {
+    std::array<ApplicationOccupiedSizeEntity, 4> entities;
+};
+
 } // namespace Service::NS