Synopsis: Cat of Diamond!!

The trio consisting of Sawamura, Kuramochi, and Asada, residents of Dormitory Room 5 of the Seidou Baseball Club, have undertaken the responsibility of caring for a cat. However, their anxiety stems from the feline's nutrition and cleanliness as well as the dormitory's prohibition on pets. In spite of this, they persevere in their task, drawn irresistibly towards the cat's charm.