Dealing with Mikadono Sisters Is a Breeze

A high school boy moves into the Mikadono household after a housing mix up and accepts a trial stay under strict rules. The eldest sister runs the calendar and treats every day like an audit. The middle sister is an idol trainee who chases events and needs quiet practice time. The youngest is mouthy at school and helpful at home when no one looks. Their mother is a famous actress who checks in by video call and demands clean grades, no scandals, and proof that the guest is not freeloading. The boy handles wake up calls, cooking duty, and study logs, then follows them to school to keep rumors from turning into trouble. A tabloid tries to bait a photo. He sets a decoy route and deletes the risk. A lost script, a sore throat before a fan meet, and a broken curfew push the house into a council where he mediates and fixes schedules. For the festival he builds a set and runs sound so the show can start on time. After a month of clean reports the mother accepts the result. He stays, pays his share from a part time job, and calls the sisters family.