Kaito finds himself working in a tropical setting surrounded by several women from his past, including his former crush Nagi and the girl who once dumped him, Hanabi. As multiple women compete for his affection and confess their long-held feelings, Kaito is overwhelmed by the sudden romantic chaos. However, after uncovering the truth behind Hanabi's past rejection, the two rekindle their passion and officially decide to start dating, promising to stay together forever.
After starting a relationship with Kaito, Matsuri struggles with the physical burden of her large breasts and searches for a way to slim down. Amidst a chaotic and erotic battle between the male and female staff at Aloha, Matsuri discovers an unconventional "diet" through intimacy with Kaito. As time passes, Matsuri pursues her dream of becoming a Food Coordinator, while her deep romantic connection with Kaito remains stronger than ever.
Kaito moves into the Aloha establishment, where he is shocked to find a reunion awaiting him with Hanabi, Matsuri, and Rikka. As he settles in and meets the eccentric Shinta, tensions rise with Rikka over his sudden disappearance in the past. However, after Kaito saves Rikka and a precious memento from a devastating fire, the two reconcile their feelings and deepen their intimate connection.