Island

Urashima is a beautiful island cut off from the mainland and burdened by old traditions, troubled families, and a mysterious illness tied to sunlight. Its fragile routine is disturbed when an unknown man washes ashore with most of his memories gone. He remembers only one extraordinary claim: he came from the future to save someone. After hearing the name Setsuna in a song sung by Rinne Ohara, he adopts it as his own.

Rinne, Karen, and Sara, daughters of the island's three influential families, each carry problems rooted in Urashima's past. As Setsuna draws closer to them, contradictions in his memories and the island's history begin to overlap. Saving one girl may not be the whole reason he came to Urashima, and time itself may be part of the mystery.