Symphony 1: Reunion

On a normal day Haruka found herself talking to a person she knew on the phone, her brother. She had not seen him since she enrolled to the music school. She met him at the dorm she is living with Starish. But it seems that the starish mistaken him to be her boyfriend and her brother just went along with it and to make matters worse they challenge each other to a fight. The price for winning a game against his brother is Haruka having to go on a date with the winner for a day. What should she do!!!