diff --git a/stratosphere/ams_mitm/source/amsmitm_fs_utils.cpp b/stratosphere/ams_mitm/source/amsmitm_fs_utils.cpp
index e232ecf5a..72e00bf79 100644
--- a/stratosphere/ams_mitm/source/amsmitm_fs_utils.cpp
+++ b/stratosphere/ams_mitm/source/amsmitm_fs_utils.cpp
@@ -196,7 +196,7 @@ namespace ams::mitm::fs {
 
         /* Check for romfs folder with content. */
         FsDir romfs_dir;
-        if (R_FAILED(OpenAtmosphereSdRomfsDirectory(std::addressof(romfs_dir), program_id, "", OpenDirectoryMode_All))) {
+        if (R_FAILED(OpenAtmosphereSdRomfsDirectory(std::addressof(romfs_dir), program_id, "", fs::OpenDirectoryMode_All))) {
             return false;
         }
         ON_SCOPE_EXIT { fsDirClose(std::addressof(romfs_dir)); };
diff --git a/stratosphere/ams_mitm/source/amsmitm_fs_utils.hpp b/stratosphere/ams_mitm/source/amsmitm_fs_utils.hpp
index 94a72c6bc..2e22dd901 100644
--- a/stratosphere/ams_mitm/source/amsmitm_fs_utils.hpp
+++ b/stratosphere/ams_mitm/source/amsmitm_fs_utils.hpp
@@ -52,4 +52,7 @@ namespace ams::mitm::fs {
     Result SaveAtmosphereSdFile(FsFile *out, ncm::ProgramId program_id, const char *path, void *data, size_t size);
     Result CreateAndOpenAtmosphereSdFile(FsFile *out, ncm::ProgramId program_id, const char *path, size_t size);
 
+    /* NOTE: Implemented in fs.mitm logic. */
+    bool HasSdManualHtmlContent(ncm::ProgramId program_id);
+
 }
diff --git a/stratosphere/ams_mitm/source/fs_mitm/fs_mitm_service.cpp b/stratosphere/ams_mitm/source/fs_mitm/fs_mitm_service.cpp
index 116675295..12074c135 100644
--- a/stratosphere/ams_mitm/source/fs_mitm/fs_mitm_service.cpp
+++ b/stratosphere/ams_mitm/source/fs_mitm/fs_mitm_service.cpp
@@ -96,11 +96,7 @@ namespace ams::mitm::fs {
 
         Result OpenProgramSpecificWebContentFileSystem(sf::Out<sf::SharedPointer<ams::fssrv::sf::IFileSystem>> &out, ncm::ProgramId program_id, FsFileSystemType filesystem_type, Service *fwd, const fssrv::sf::Path *path, bool with_id) {
             /* Directory must exist. */
-            {
-                FsDir d;
-                R_UNLESS(R_SUCCEEDED(mitm::fs::OpenAtmosphereSdDirectory(std::addressof(d), program_id, ProgramWebContentDir, fs::OpenDirectoryMode_Directory)), sm::mitm::ResultShouldForwardToSession());
-                fsDirClose(std::addressof(d));
-            }
+            R_UNLESS(HasSdManualHtmlContent(program_id), sm::mitm::ResultShouldForwardToSession());
 
             /* Open the SD card using fs.mitm's session. */
             FsFileSystem sd_fs;
@@ -162,6 +158,17 @@ namespace ams::mitm::fs {
 
     }
 
+    bool HasSdManualHtmlContent(ncm::ProgramId program_id) {
+        /* Directory must exist. */
+        FsDir d;
+        if (R_SUCCEEDED(OpenAtmosphereSdDirectory(std::addressof(d), program_id, ProgramWebContentDir, fs::OpenDirectoryMode_Directory))) {
+            ::fsDirClose(std::addressof(d));
+            return true;
+        } else {
+            return false;
+        }
+    }
+
     Result FsMitmService::OpenFileSystemWithPatch(sf::Out<sf::SharedPointer<ams::fssrv::sf::IFileSystem>> out, ncm::ProgramId program_id, u32 _filesystem_type) {
         R_RETURN(OpenWebContentFileSystem(out, m_client_info.program_id, program_id, static_cast<FsFileSystemType>(_filesystem_type), m_forward_service.get(), nullptr, false, m_client_info.override_status.IsProgramSpecific()));
     }
diff --git a/stratosphere/ams_mitm/source/ns_mitm/ns_am_mitm_service.cpp b/stratosphere/ams_mitm/source/ns_mitm/ns_am_mitm_service.cpp
index 5afb42243..11f89bafe 100644
--- a/stratosphere/ams_mitm/source/ns_mitm/ns_am_mitm_service.cpp
+++ b/stratosphere/ams_mitm/source/ns_mitm/ns_am_mitm_service.cpp
@@ -14,6 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <stratosphere.hpp>
+#include "../amsmitm_fs_utils.hpp"
 #include "ns_am_mitm_service.hpp"
 #include "ns_shim.h"
 
@@ -24,10 +25,9 @@ namespace ams::mitm::ns {
     }
 
     Result NsAmMitmService::ResolveApplicationContentPath(ncm::ProgramId application_id, u8 content_type) {
-        /* Always succeed for web applets asking about HBL. */
-        /* This enables hbl html. */
-        bool is_hbl;
-        if (R_SUCCEEDED(pm::info::IsHblProgramId(&is_hbl, application_id)) && is_hbl) {
+        /* Always succeed for web applets asking about HBL to enable hbl_html, and applications with manual_html to allow custom manual data. */
+        bool is_hbl = false;
+        if ((R_SUCCEEDED(pm::info::IsHblProgramId(std::addressof(is_hbl), application_id)) && is_hbl) || (static_cast<ncm::ContentType>(content_type) == ncm::ContentType::HtmlDocument && mitm::fs::HasSdManualHtmlContent(application_id))) {
             nsamResolveApplicationContentPathFwd(m_forward_service.get(), static_cast<u64>(application_id), static_cast<NcmContentType>(content_type));
             R_SUCCEED();
         }
diff --git a/stratosphere/ams_mitm/source/ns_mitm/ns_web_mitm_service.cpp b/stratosphere/ams_mitm/source/ns_mitm/ns_web_mitm_service.cpp
index 1372bf593..44d913d20 100644
--- a/stratosphere/ams_mitm/source/ns_mitm/ns_web_mitm_service.cpp
+++ b/stratosphere/ams_mitm/source/ns_mitm/ns_web_mitm_service.cpp
@@ -14,6 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <stratosphere.hpp>
+#include "../amsmitm_fs_utils.hpp"
 #include "ns_web_mitm_service.hpp"
 
 namespace ams::mitm::ns {
@@ -23,10 +24,9 @@ namespace ams::mitm::ns {
     }
 
     Result NsDocumentService::ResolveApplicationContentPath(ncm::ProgramId application_id, u8 content_type) {
-        /* Always succeed for web applets asking about HBL. */
-        /* This enables hbl html. */
-        bool is_hbl;
-        if (R_SUCCEEDED(pm::info::IsHblProgramId(std::addressof(is_hbl), application_id)) && is_hbl) {
+        /* Always succeed for web applets asking about HBL to enable hbl_html, and applications with manual_html to allow custom manual data. */
+        bool is_hbl = false;
+        if ((R_SUCCEEDED(pm::info::IsHblProgramId(std::addressof(is_hbl), application_id)) && is_hbl) || (static_cast<ncm::ContentType>(content_type) == ncm::ContentType::HtmlDocument && mitm::fs::HasSdManualHtmlContent(application_id))) {
             nswebResolveApplicationContentPath(m_srv.get(), static_cast<u64>(application_id), static_cast<NcmContentType>(content_type));
             R_SUCCEED();
         }