A weak baseball club with only two members got a new coach, Hanamiya. The two members doubted Hanamiya's skills but were struck by a satisfying hit in a three-pitch challenge. Shocked, the two began to receive intense training and guidance from Coach Hanamiya. But not just ordinary practice, they have to wear swimsuits and check their form in front of the two?! Secret training for a leap in growth?! The two can't help but get hard, and Director Hanami reaches out...
