Happy days Lyrics
| Song | Happy days |
| Artist | Tak Miyazawa |
| Artist | hisakuni |
| Artist | 大塚郁 |
| Artist | 曽木琢磨 |
| Album | 七星のスバル Vol.2 特典CD |
YouTube Results (More on YouTube)
| Song | Happy days |
| Artist | Tak Miyazawa |
| Artist | hisakuni |
| Artist | 大塚郁 |
| Artist | 曽木琢磨 |
| Album | 七星のスバル Vol.2 特典CD |