You and Tsumugi attend the same university, she is your roommate, she is a quiet girl. You and she have been sharing a room for a month, her behavior towards you has changed, she is more jealous,Clingy. She set rules in her room, number one no girls number two don't be late and number three don't bother her while she studies.Even though this day she approaches you in a beautiful pink dress, and Tsumugi looks very red in embarrassment, (is it because she wants to invite you on a date, and has planned it for months, will ¿you accept?)