diff --git a/KoeBook.Core/Services/ClaudeStoryGeneratorService.cs b/KoeBook.Core/Services/ClaudeStoryGeneratorService.cs
index 3abf6de..e9e7c43 100644
--- a/KoeBook.Core/Services/ClaudeStoryGeneratorService.cs
+++ b/KoeBook.Core/Services/ClaudeStoryGeneratorService.cs
@@ -28,7 +28,8 @@ public async ValueTask<string> CreateStoryAsync(StoryGenre storyGenre, string pr
             },
                 cancellationToken: cancellationToken
             );
-            return storyXml.ToString();
+            var xml = storyXml.ToString();
+            return xml[xml.IndexOf('<')..(xml.LastIndexOf('>') + 1)];
         }
         catch (OperationCanceledException) { throw; }
         catch (Exception e)
diff --git a/KoeBook/Services/CreateCoverFileService.cs b/KoeBook/Services/CreateCoverFileService.cs
index 6552e63..e873c8f 100644
--- a/KoeBook/Services/CreateCoverFileService.cs
+++ b/KoeBook/Services/CreateCoverFileService.cs
@@ -39,7 +39,7 @@ public void Create(string title, string author, string coverFilePath)
             graphics.DrawString($"著者: {author}", authorFont, brush, new Rectangle(0, 1920, 1600, 640), stringFormat);
 
             // png として出力
-            bitmap.Save(Path.Combine(coverFilePath, "Cover.png"), ImageFormat.Png);
+            bitmap.Save(coverFilePath, ImageFormat.Png);
         }
         catch (Exception ex)
         {