De vier Yuzuki-broers – Hayato, Mikoto, Minato en de jonge Gakuto – verloren twee jaar geleden hun ouders en werken nu om zichzelf groot te brengen. Samen leven, leren, vechten en vergeven ze zoals broers dat zouden moeten doen.
| Directing | 本郷みつる | Series Director |
| Sound | 周防義和 | Original Music Composer |
| Visual Effects | 田中織枝 | Character Designer |
| Camera | 並木智 | Director of Photography |
| Visual Effects | 田中織枝 | Supervising Animation Director |
| Visual Effects | 川添政和 | Layout Supervisor |
| Directing | 川崎芳樹 | Series Director |
| Writing | Shizuki Fujisawa | Comic Book |
| Art | Kaede Aizawa | Prop Designer |
| Art | Yukihiro Shibutani | Art Direction |
| Editing | 長坂智樹 | Editor |
| Visual Effects | 田中美穂 | Color Designer |
| Costume & Make-Up | Kuro OI | Costume Design |
| Sound | Flumpool | Theme Song Performance |
| Sound | Jirafa | Music Director |
| Costume & Make-Up | 尾井久郎 | Costume Designer |
