Kouyouen (光陽園学院) is an all-girls school for the prestigous and well-known. It has a high university entrance rate.
Taniguchi, a student of North High, claimed he found a girlfriend there in December of year 0, shortly before The Disappearance incident occurred. The student turned out to be Kuyou Suou.
In an alternate reality created by Yuki Nagato, the school was co-ed and specifically designated for students with advanced academic abilities. Haruhi Suzumiya and Itsuki Koizumi attended it. The same state of events exists in The Disappearance of Nagato Yuki-chan.
The Disappearance Alternate RealityEdit
The Disappearance of Nagato Yuki-chan Alternate RealityEdit