YU-NO

YU-NO: A Girl Who Chants Love at the Bound of this World
Cover art for Sega Saturn version
この世の果てで恋を唄う少女YU-NO (Kono Yo no Hate de Koi o Utau Shōjo YU-NO)
Genre	Science fiction
Game
Publisher	ELF Corporation
Designed by	Hiroyuki Kanno
Music by	Ryu Umemoto Ryu Takami Kazuhiro Kanae
Genre	Eroge, visual novel, adventure
Platform	NEC PC-9801 (original release), Sega Saturn, Microsoft Windows
Released	1996
Original video animation
YU-NO
Directed by	Katsuma Kanazawa
Written by	Hiroyuki Kanno (original) Osamu Kudo (screenplay) Katsuma Kanazawa (storyboard)
Studio	Pink Pineapple
Released	1998 – 1999
Episodes	4
Game
Developer	5pb.
Publisher	5pb.
Produced by	Makoto Asada Chiyomaru Shikura
Designed by	Ryō Nagi
Music by	Ryu Umemoto (original) Ryu Takami Keishi Yonao
Genre	Visual novel, adventure
Platform	PlayStation Vita, PlayStation 4
Released	March 16, 2017
Anime
Produced by	MAGES Genco
Studio	Feel

YU-NO: A Girl Who Chants Love at the Bound of this World (この世の果てで恋を唄う少女YU-NO, Kono yo no hate de koi o utau Shōjo YU-NO), is a Japanese visual novel / graphic adventure game developed and published by ELF Corporation, originally as an adult game for the PC-98 in 1996. It was written and produced by Hiroyuki Kanno, while its FM-synth music soundtrack was composed by Ryu Umemoto, Ryu Takami, and Kazuhiro Kanae; who had previously worked on C's Ware titles such as Eve Burst Error (1995).

The game's protagonist travels between various parallel worlds in order to solve the mystery of his parents' disappearance. Although parallel worlds are not an unfamiliar concept in science fiction, the game uses concepts from physics, mathematics, philosophy, history and religion to construct a unique fictional universe. In particular, the "A.D.M.S." or "Auto Diverge Mapping System," which visually displays the branching parallel worlds/storylines as a tree, aids the player in navigation. The game also includes references to cannibalism and incest. A NEC PC-9801 edition, Sega Saturn edition and Microsoft Windows edition were released. All versions are rated 18+, although explicit sex scenes were removed from the Saturn and Windows editions. A hentai anime OVA as well as a manga and several novels were later released.