Kashi Kota, a third-year student at Hanayama High School, has spent his entire high school life trying to “stay out of sight, out of mind,” but after losing a game of “rock-paper-scissors”, he is forced to become a member of the choir competition committee.
Komukai Riko is a young single woman and works for an event planning company. She is considered average in regards to her personality and appearance. One day, her co-worker mentions person of a mass production model. Komukai Riko asks herself if she could be such a person for a mass production model and she answers her question affirmatively. Around this time, she happens to see plastic model Zaku at a neighborhood store. Zaku is a robot from TV anime series Mobile Suit Gundam. She becomes interested in plastic models and challenges herself to make her first plastic model.
Fujii Karen (藤井夏恋) is a Japanese vocalist, performer, actress and model. She is member of the groups Happiness and E-girls and a former member of the unit ShuuKaRen.