It's summer vacation! Futaro (VA: Yoshitsugu Matsuoka) and his younger sister Raiha (VA: Natsumi Takamori) have been invited to the quintuplets' private island. But a sudden storm turns what was supposed to be a three-day, two-night vacation into two weeks of survival! What fate awaits in this edge-of-your-seat island adventure with the quintuplets? The five heroines are fully voiced by popular Japanese voice actors: Ichika Nakano (VA: Kana Hanazawa), Nino Nakano (VA: Ayana Taketatsu), Miku Nakano (VA: Miku Ito), Yotsuba Nakano (VA: Ayane Sakura), and Itsuki Nakano (VA: Inori Minase)! The game is also packed with newly drawn illustrations created specifically for the game! Enjoy visuals of the heroines in their swimsuits and wedding dresses, and the various expressions they show during their days on the island.