Yu-No: Konoyo no Hate de Koi o Utau Shoujo

Takuya Arima is a young student whose father, a historian who has conducted various researches, disappeared recently. During a summer vacation Takuya receives a peculiar package from his missing father, along with a letter containing information about the existence of various parallel worlds. At first Takuya doesn't take it seriously, but soon he realizes that he possesses a device that allows him to travel to alternate dimensions. Is his father alive, after all? If so, where is he? Kono Yo no Hate de Koi wo Utau Shoujo Yu-No (この世の果てで恋を唄う少女ＹＵ－ＮＯ) is a 1996 visual novel for the PC-98 by Elf. They ported it to the Sega Saturn in 1997, adding full animation and voice acting. Neither version was released outside Japan. It was also bundled with the Shuttle Mouse.