Maika Tsuchimikado

Maika Tsuchimikado is Motoharu's younger stepsister and a student at a Maid School, where she trains to become a maid. She wears maid attire and is often seen riding on top of a cleaning robot. Maika is friendly with Touma and quietly keeps the secret that a girl is living with him. Although she normally stays in her school dormitory, she sometimes lives at her brother's apartment.