Keita is constantly pestered by his two step-sisters, who shamelessly compete for his attention. He silently endures their inappropriate behavior, even though his friends mock him for it. However, their actions reach a boiling point when they unexpectedly show up at his school with his lunch. Keita can no longer hold back his frustration and lashes out in front of everyone present. The step-sisters confess their love for him, and Keita chases after them after realizing the gravity of his actions. He apologizes and vows to study hard so that he can attend the same high school as them.
