(C94) [Makai no Kaniya (Kanihara Taraba, Devil)] Tatsuta Onee-chan to Obenkyou (Kantai Collection -KanColle-)
Shishunki no Obenkyou Ch.1
Obenkyou no Jikan
[Mutou Koucha] Chiteki Bungaku Bishoujo to Ikimakuri Obenkyou Ecchi [Chinese] [XM漢化] [Digital]
Shishunki no Obenkyou
[Takurou] Ecchi Tokidoki Obenkyou | The Sexy, Heart-Pounding Study [English] [The Lusty Lady Project]
Shishunki no Obenkyou | 사춘기의 공부
(COMIC1☆5) [g.k.p. (Mizusawa Nagi)] Tadaima Obenkyou-chu! (CODE GEASS)
Obenkyou ≒ Sex
Unicorn-chan to Himitsu no Obenkyoukai
(Reitaisai 15) [Arutana (Chipa)] Kokoro Onee-chan to H na Obenkyou (Touhou Project) [Chinese] [靴下汉化组]
Immoral na Obenkyou - Immoral Study | 부도덕한 공부
Sanyousei to Obenkyoukai
(C93) [Yadapot (Yadapoteto)] Amanatsu & Shori to Obenkyou Shiyo! [Chinese] [无毒汉化组]
Shishunki no obenkyou | Puberty Study Session