Birthdate: 13th september, Tokyo

Eikichi's best friend since middle school with a past as co-founder of Oni-Baku of Shonan, now Ryuji keeps his passion for bikes with his job as mechanic and opened his own workshop.

Even now, sometimes, still gets involved into Eikichi's adventures, and being attached to him still follows and supports him.

He's the mature one of the two and often gives Eikichi some good advice.

He has a girlfriend, Nagisa Nagase (a character very much more developed in Shonan Junai Gumi rather than GTO).

BackgroundEdit

When he was part of the well known Oni-Baku (Oni, meaning demon, comes from Onizuka - Baku, meaning bomb, comes from Ryuji's surname Danma which means explosion) they were 16 years old and were used to often fighting against gangs way superior in number than them; although thanks to their abnormal strength and their uncommon charisma the two slowly begin to become a legend. Ryuji is notable for being one of the few fighters capable of matching Onizuka in strength and skill.