Official Site

Release date: July 29, 2016
Alt name: 私立常盤坂学院 -immoral game- 第4巻 騎堂アラト ～野蛮な騎士は草風に愛す～
Age: R18
Publisher: CARDINAL
Scenario: 齋藤アポロ
Illustration: Sanba
CV: Higeuchi Waruta (Takeuchi Ryouta)

Tracklist:
1.赤い瞳の騎士
2.overplay
3.ナイト・ツアー
4.馬上にて
5.Tears of Knight
6.守りたいもの
Tokuten for purchasing whole series (4 CDs):
Stellaworth Tokuten
After Episode typeA ～王の愛情、騎士の熱情～ (Eriya and Arato)
Animate and Pokedora R Tokuten
After Episode typeB ～塔の嫉妬、司教の求愛～ (Ruka and Nao)