Hikari's classmates, Ako and Marina decided to visit the school's rifle shooting club with Hikari's accompany. They tried to use a beam rifle to shoot and watch the girls in training. They left while they are training, causing Erika and Yukio failing to recruit them into the club. Later, they search for a new club advisor as the advisor for the rifle shooting club is also the advisor for the school's chess club, which is getting too busy for the teacher to handle. Unexpectedly, Yüko, a teacher who has no clue about the rifle shooting club came in and became their club's advisor.