Mahiro's Time of the Month The water heater is broken for the night, so Mihari and Mahiro visit a public bath, where the former teaches him about hair care; quickly exhausted, he leaves to reminisce about the time when he was the one helping his little sibling bathe. Upon finishing breakfast, Mahiro naturally tries out new hairstyles, which Mihari records for her research. As nearly one month passes since start of the transition, Mahiro has his first menstruation and Mihari takes care of him.