Tenmaru Shishi

Tenmaru is Kennosuke's younger brother, in the manga. He always helps him with his training, so when Daichi comes to bother them with his challenge, Tenmaru will tells him to go away and to leave them alone, while Kennosuke just advises his brother to ignore Daichi.

It is obvious Tenmaru really looks up to Kennosuke: he always follows him everywhere, he gives Kennosuke all he needs, he refers to Kennosuke as "big brother" even when talking to him directly while the latter just calls him Tenmaru, etc.

Tenmaru appeared in the last Japanese episode of G Revolution, with his brother and Tomonji Hiraku.