As Kazuya finds it difficult to advertise the Cooking Research Society for Rina Yunoki's sake and not Rina herself, she's been giving her best to prepare food and gathering new members for the club till the day of the school festival and Kazuya decides to make a poster of her cooking. On one fall day, after Kazuya gets mistaken by the girls for the one from the Photography club who tried to sneak into the vaulting horse and beaten up in front of Rina, he is relieved after Rina cleared of the misunderstanding in front of them and when she asked Kazuya to help her find a four-leaf clover...