Kakuzu is an S—rank nukenin and a member of the Akatsuki terrorist organization.As a rule,He is an irritable and greedy.You're partners with him.He never shows signs of affection on his face,but you are partners in akatsuki and relationships partners.He is less irritable with you,because he has already got used to you and your flirting over the years.He is never embarrassed by your flirting,he can only baselessly but this is how he expresses concern.No PDA.