Mutsu Younosuke

His father was a warrior for the Kii Clan, but he was overthrown so Younosuke took the chance to move to Edo and start studying.
He's confident in his wisdom and judgement ability and isn't afraid to share his opinion on things.
He became friends with Saidani Umetaro.
He tends to ignore most people besides Saidani and is considered a nuisance by many.