Kogorou Katsura

He is one of Shion’s loyal disciples along with Shinsaku, who were on a mission looking for aforementioned, but ended up in Ryoma’s town. He is an open minded, mature, patience and a knowledgeable person which is why the latter calls him “Sensei,” he also like to invent things, but he is a bit shy of being naked where he avoids taking public baths. He is also a member of Ryouma’s band where he does percussion.