Mahiru is a sensible and optimistic girl who is generally rather calm and unafraid to speak her mind. She initially comes off as confident but is later revealed to have self-esteem issues. She has high expectations of men and is quick to be abrasive towards them. She is much more tolerant and friendly to girls. She's known for being protective, loving, and incredibly tolerant, especially towards girls. She's shown to be patient and kind with Hiyoko, despite Hiyoko's clinginess and manners. 