As an adult, Haruchiyo seems to be more extroverted, blunt, and loud. He is ruthless and displays psychopathic tendencies. Haruchiyo’s most notorious trait is his fanatical idolatry towards Manjiro Sano, believing Mikey to be his "king" (akin to the Chess King), and thus deserving of the utmost respect, loyalty and devotion. He is so inclined towards protecting Mikey or the image of him, that he assaulted a gang by himself when they were badmouthing Toman.