Yuuichirou Jinnai

Team: RumbleWing[s]

The older brother of a pair of identical twins, wild and fiercely unruly. He supports York by making use of the skills and physical strength forged through countless fights, as well as his perfect sync with Sajin. Hot-blooded and fiercely loyal, he never breaks a promise and is always on time. In fights, he is "ridiculously strong."

(Source: Official Site)