[Hiraoka Ryuichi] Dorei Jokyoushi Mashou no Curriculum [English] [Munyu]
[Hiraoka Ryuichi] Moral Hazard ~Haitoku no Kyoudan~ [English]
[Hiraoka Ryuichi] Shin Dorei Jokyoushi Mashou no Curriculum [English] [Munyu]
[Ryuichi Hiraoka] Female Teacher Ryeka [English]