Akari Akaza, Chinatsu Yoshikawa, Kyouko Toshinou, and Yui Funami return to commemorate an exciting occasion! Despite their initial bizarre celebration ideas, they decide to hold a party at their Amusement Club room. With the help of friends from the Student Council, they start preparing for the big day—with a surprise planned for a special someone. Join the girls as they work together to create an enjoyable and memorable party, all the while interacting with one another with their cute and unique quirks. [Written by MAL Rewrite]