Yuuto has been invited to Haruka's birthday party. He goes to Akihabara by himself to get a present for Haruka, a figurine of the heroine of her favorite anime. With some help and advice from Nobunaga, who he runs into, he is able to get the figurine of Dojikko Aki-chan. The party hall that the supersonic jet takes him to is the Nogizaka Family's private resort island, directly on top of the equator. There, he sees every famous person possible in the world… This surprises Yuuto, but he enjoys the mini-vacation with Haruka and Mika in swimsuits until the party begins. However, one of the guests, Shuuto Southerland, envies Yuuto and…