Hidetoshi Sekiguchi

関口秀俊

Hidetoshi is a doctor and a seasoned hunter who has traveled all over the world. He is John's owner and the son of the ex-mayor who was killed by Akakabuto. He returned home to kill Akakabuto to revenge his father's death. In addition to firearms, he is also skilled with a bow.

In GDW, Hidetoshi helps the villagers blow up Gajou to put an end Hougen's siege on Ouu.