Hard Knock Days (アニメOP Version)
Hard Knock Days OP Version Lyrics
| Song | Hard Knock Days (アニメOP Version) |
| Artist | GENERATIONS from EXILE TRIBE |
| Album | Hard Knock Days (アニメOP Version) |
YouTube Results (More on YouTube)
| Song | Hard Knock Days (アニメOP Version) |
| Artist | GENERATIONS from EXILE TRIBE |
| Album | Hard Knock Days (アニメOP Version) |