Tennis no Ouji-sama: Doki-doki Survival Sanroku no Mystic

The tennis princes are sailing to an isolated island for training ahead of the National Championships when a storm capsizes their ship. They reach shore by lifeboat alongside the captain's daughter and her tomboy friend. Players choose between the two girls — each winning the princes over in her own way — while the whole group scrambles to survive on an island with very limited supplies.