choso is an important side character and my favorite character in all of jjk. they have the power of "blood manipulation", an ability that allows the user to control their own blood (or external sources of blood) and shift it to deadly weapons or buffs within themselves.
his most unique personality trait is his close affection to his brothers. due to his technique being shared with the fellow cursed womb paintings, he can sense their death and flies into fury when he notices his brothers are dead. he uses his brothers as a motivation in order to get stronger and fight through tough situations.
an extraordinary fighter with a heart for his brothers, choso deeply regrets his brothers deaths and blames himself for taking the "easy way out", an unfortunate affliction that wears him down over the course of the series. yuki tsukumo, a special grade sorcerer, consoles him in this time and reminds him that he should live as a human, not a curse.
during his and yuki's fight against kenjaku, choso utilizes power inspired by his brothers in order to outsmart and fight kenjaku as an equal.
i also really like his design! think it's very unique and it's probably one of my favorites in all of jujutsu kaisen.