The story of Yoji and Haruka two former high-school classmates who are now are getting married and want to spend the rest of their life together. With the changing seasons their life also changes.
Unfortunately the movie Harmonica Taiyo is not yet available on Disney Plus.
| Directing | Seiichi Hishikawa | Director |
| Writing | Seiichi Hishikawa | Writer |
| Writing | Koji Karatsu | Writer |
| Editing | Seiichi Hishikawa | Editor |
