As the tropical sun beats down on the resort, Daisuke finds himself caught in the middle of Nao and Mitsugu's ongoing rivalry during a lively beach volleyball game. The arrival of his cousin Maya adds a familiar yet surprising dynamic to the group, while the energetic Kanae pulls everyone into an impromptu island exploration with her friend Mika. Amidst the palm trees and ocean breezes, lighthearted competitions and shared laughter highlight the day's adventures, strengthening unexpected connections in the island paradise.