At the request of her father, Yuri takes care of her son, Hideo, who is aiming to become a professional gamer, as a housekeeper. Hideo, who has no time until the world tournament, practices all the time without eating in order to beat the mysterious genius masked gamer Z. As a result, Hideo, who put too much strain on his wrist, ironically ends up with tendonitis. One day, Yuri wears a short skirt and does housework beside Hideo who is practicing. Hideo, who witnessed the panties peeking out, mysteriously recovered from the tendonitis.
