Obenkyou ≒ Sex
(Reitaisai 12) [Youyoumu (Nigo)] Youmu DAY's -Obenkyouhen- (Touhou Project) [English] [Daddy's Cummies]
Katekyo no Obenkyou
(C93) [Yadapot (Yadapoteto)] Amanatsu & Shori to Obenkyou Shiyo!
[Shouji Ayumu] Ecchi no Obenkyou | Sexy Studies (COMIC LO 2018-09) [English] [Doki Fansubs] [Digital]
Muchi na Ojou-sama no Obenkyou | The Naïve Lady’s Naughty Study
sanae oneechan de obenkyou shiyo!
Ningen no Obenkyou
Doki Doki Oyako Lesson~Oshiete H na Obenkyou~ Dainiwa Complete Ban
(C81) [NIKKA (Mario Kaneda)] Jissen Enshuu * Queen no Obenkyoukai (Final Fantasy Type-0)
(C89) [Yuusha-sama Go-ikkou (Nemigi Tsukasa)] Kashima Sensei to Obenkyoukai (Kantai Collection -KanColle-) [Chinese] [脸肿汉化组]
Sanyousei to Obenkyoukai