| Piston Fist: Style One | |
|---|---|
 | |
| Kanji |
活塞拳・一式 |
| Rōmaji |
Kassokuken: Ichishiki |
| Classification | |
| Parent jutsu | |
|
| |
|
| |
| Manga Debut | |
| Anime Debut | |
Piston Fist: Style One (活塞拳・一式, Kassokuken: Ichishiki) is where Jūgo uses his transformation to grow jet booster-like arms that increases his attacking power.