Sanzu Haruchiyo

Back story

He was a member of the Tokyo Manji Gang where he was the ViceCaptain of the 5th Division under Yasuhiro Muto, it was later shown that he had fanatical idolatry for Mikey and he only worked with him under his order. He later became Mikey's right-hand man in the Kanto Manji Gang and soon became its No. 2, they became the dangerous criminal organization known now as Bonten. He also revealed to have known Mikey since their childhood alongside Baji and is the middle brother of Takeomi Akashi and Senju Kawaragi. Back as a child, he used to be cheerful and bright when he was still friends with Mikey and Baji, though he had to take responsibility for looking after Senju while Takeoshi was away. Unfortunately, when Senju pinned the blame on Sanzu, he began disowning his own family members, even his sister, he would tell other people that he is an only child and refused to acknowledge their presence. The scapegoat act was the reason he disowned Senju and despite the latter apologizing for her actions, he still refused and was more than happy to hit his own sister back. Any reason for his notorious idolatry for Mikey would be from the time he had his jaw nearly ripped off and became insane or out of genuine loyalty, regardless, he was very inclined and protective of Mikey, or at least the image of him, in order to ensure that his liege will prevail, even if it costs him his own life. While he seemed enigmatically decent, where he seems to rarely talk as often and has a much calmer demeanor, he ends up dropping them the second he kills Mucho for "treason" against his king. He's also shown to be manipulative as he manages to forge his loyalty for Mucho and encourages Mikey to continue following down a path to darkness, despite having loyalty for him. Sanzu was mostly portrayed as an obedient and stoic individual who stayed by Mucho's side for a long time. However, beneath it was nothing more than a mere facade, as his true nature is a sadistic fanatic loyal to his "liege" Mikey

Impulses

Sanzu is a borderline psychopathic individual who enables Mikey to commit his horrid atrocities in both the Kanto Manji Gang and Bonten. He takes pure delight in murdering or harming others out of sadism and has a wide lake amount of empathy for those he harmed, especially those whom he found "annoying", like the time he tried to derail the train to crush all Toman members, even his own allies, and killing three members with a gun. He also happens to enjoy mocking others. He's always been mad with homicidal intent and fanatism for Mikey.