|Aliases||Boundary of Ecstasy, Doppelgänger, Doppelganger|
|Length||Very short (< 2 hours)|
In a mountainous town there is a serial murder case with all the victims' necks cut off and either heads or bodies taken away. Main character is a student from a parallel world who claims that his twin brother and sister heads got replaced in early childhood. Normalcy and absurd come together in this investigation.
|2005||Bouga Kyoukai - Trial Edition|
|2006-09-05||18+||Bouga Kyoukai - Download Edition|
|2014-07-07||18+||Bouga Kyoukai Doppelganger Complete Pack|