第1話: 謎の島ウラシマで目覚めた刹那は記憶を取り戻せなかった
2018年7月1日 放送
When he wakes up, Setsuna has no memories. He is on the island left behind by time, Urashima. Everyone he meets is mysterious and puzzling. At night he is surprised by a girl singing on the beach, and somehow says her name. "Rinne..." (Source: Crunchyroll)