Happy Day Lyrics
| Song | Happy Day |
| Artist | 真田アサミ |
| Artist | 沢城みゆき |
| Artist | 氷上恭子 |
| Album | Di Gi Charat CD-BOX |
YouTube Results (More on YouTube)
| Song | Happy Day |
| Artist | 真田アサミ |
| Artist | 沢城みゆき |
| Artist | 氷上恭子 |
| Album | Di Gi Charat CD-BOX |