A 2007 [[eroge]] by [[Noesis]].

h4. See also: 
* http://www.gungnir.co.jp/noesis/index2.html - [[Noesis]]/Gungnir Product Page
* http://vndb.org/v1540 - [i]Houkago no Senpai[/i] at the Visual Novel Database
houkago no senpai