(COMIC1☆11) [Planaria Tei (Arimori Haru)] ……Sonna Hazukashii Obenkyou Shiranai (Eromanga Sensei)
[Miyashita Kitsune] Obenkyo Shimasho | 我們一起念書吧 [Chinese]
[Circle Bob (Brother Bob)] Gohoubi Time wa Ecchi na Obenkyou [Digital]
[Fuyuno Mikan] Mizugi de Obenkyou | Swimsuit Study! (COMIC LO 2015-01) [English] {Yuzuru Katsuragi}
Obenkyou no Jikan
Shishunki no Obenkyou Ch.1-6
Chiteki Bungaku Bishoujo to Ikimakuri Obenkyou Ecchi
Shishunki no Obenkyou chapter 6+sp
(C93) [110-GROOVE (Itou Yuuji)] Sanyousei to Obenkyoukai (Touhou Project)
Hare-chan no Obenkyou
(Reitaisai 15) [Arutana (Chipa)] Kokoro Onee-chan to H na Obenkyou (Touhou Project)
[Fuyuno Mikan] Mizugi de Obenkyou | Swimsuit Study! (COMIC LO 2015-01) [leoR8714個人漢化]
Ningen no Obenkyou
Sense to Naisho no Obenkyou | A Secret Study with Sensei
[Takurou] Ecchi Tokidoki Obenkyou | The Sexy, Heart-Pounding Study [English] [The Lusty Lady Project]
[Itaba Hiroshi] Tanima de Obenkyo | Study With Cleavage (Namaiki! 2016-03) [English] [Brolen]
Immoral na Obenkyou - Immoral Study | 부도덕한 공부
[stellar drop (Satsuki Yukimi)] Unicorn-chan to Himitsu no Obenkyoukai (Azur Lane) [Digital]
Iinchou to Obenkyou
(C89) [stripe orange (Sumisaki Yuduna)] Osananajimi to no Sugoshikata ~Obenkyoukai Hen~
[Yuzu Machi] Obenkyou Yori Ochinchin ga Suki! | I Love Dick More Than Studying! (Digital Puni Pedo! Vol. 09) [English] [Tenua]
Shishunki no Obenkyou 4 | Puberty Study Session 4
Yuri to Issho ni Obenkyou. | Studying Together with Yuri.
[Meganei] Shishunki no obenkyou | Puberty Study Session (COMIC Shingeki 2019-01) [English] [Shippoyasha] [Digital]
Shishunki no Obenkyou
(HaruCC19) [RIX (Mamiya)] Obenkyou no Jikan (Shingeki no Kyojin)
(C94) [Makai no Kaniya (Kanihara Taraba, Devil)] Tatsuta Onee-chan to Obenkyou (Kantai Collection -KanColle-)
sanae oneechan de obenkyou shiyo!
Shishunki no Obenkyou Ch.1-5
[Momo] Iinchou to Obenkyou
[Etigoya (tau)] Oujo no Obenkyou 2 (Dragon Quest V)
Shishunki no Obenkyou | Puberty Study Session Ch. 5
Shishunki no Obenkyou | 사춘기의 공부
Mika Ganbaru Oshiete Ecchi na Obenkyou.
Unicorn-chan to Himitsu no Obenkyoukai
[Fuyuno Mikan] Obenkyou wa Ecchi no Ato de (COMIC LO 2016-03) [Chinese] [想抱雷妈汉化组] [Digital]
(C79) [Niratama (Sekihara Umina)] Yuri to Issho ni Obenkyou. (Heartcatch Precure!) [Chinese] [v.v.t.m汉化组]
(C89) [Yuusha-sama Go-ikkou (Nemigi Tsukasa)] Kashima Sensei to Obenkyoukai (Kantai Collection -KanColle-)
Jeanne to Obenkyou
[Meganei] Shishunki no Obenkyou Ch.1-6 [Chinese] [變態紳士漢化組] [Digital] [Ongoing]
(C84) [Shinsen Gokuraku (Shuragyoku Mami)] Hime-sama, Obenkyou no Ojikan desu. (Tales of the Abyss)
(C89) [Shiawase Manjuu (Shiawase 1500)] Minna de Obenkyou Shimasho!!
(C99) [stellar drop (Satsuki Yukimi)] Unicorn-chan to Himitsu no Obenkyoukai (Azur Lane)
(C76) [sys3.6.3. (Zankuro)] Not Kabopan Hon 4 (Disgaea)
[Inoue Nanaki] Muchi na Ojou-sama no Obenkyou | The Naïve Lady’s Naughty Study (ANGEL Club 2016-03) [English] [N04h]
(C79) [Niratama (Sekihara Umina)] Yuri to Issho ni Obenkyou. (Heartcatch Precure!)
Shishunki no Obenkyou Ch.1
Saimin Mahou de Asobo | 用催眠魔法做遊戲
Shishunki no Obenkyou | Puberty Study Session Ch. 2
Doki Doki Oyako Lesson~Oshiete H na Obenkyou~ Dainiwa Complete Ban
[Mutou Koucha] Chiteki Bungaku Bishoujo to Ikimakuri Obenkyou Ecchi [English] [Digital]
Kateikyoushi to Obenkyou
[TinkerBell] [Full Color Seijin Han] Doki Doki Oyako Lesson ~Oshiete H na Obenkyou~ Dainiwa Complete Ban [Digital]
(Reitaisai 12) [Youyoumu (Nigo)] Youmu DAY's -Obenkyouhen- (Touhou Project)
Kimi ni Haitte Shitai Koto | I want to possess you
Dragon Road 4 [Dragon Ball]
Katekyo no Obenkyou
Jissen Enshuu * Queen no Obenkyoukai
Ghost Love Ch.1-21.5
[Takurou] Ecchi Tokidoki Obenkyou
(C93) [NERCO (Koikawa Minoru)] Sanae Onee-chan de Obenkyou Shiyou! (Touhou Project)
[Fuyuno Mikan] Love Collection "Mizugi de Obenkyou" Bangaihen (Petit Cawa Toranoana Gentei Shousasshi) [Chinese] [想抱雷妈汉化组&leoR8714]
(C76) [KinoKonomi (kino)] Pachuri no Obenkyou (Touhou Project)
[ACID EATERS (Kazuma Muramasa)] Ningen no Obenkyou (Tropical-Rouge! PreCure)
(C93) [110-GROOVE (Itou Yuuji)] Sanyousei to Obenkyoukai (Touhou Project) [Chinese] [迷途竹林汉化]
[Meganei] Shishunki no Obenkyou 4 | Puberty Study Session 4 (COMIC Shingeki 2019-12) [English] [Shippoyasha] [Digital]
(COMIC1☆5) [g.k.p. (Mizusawa Nagi)] Tadaima Obenkyou-chu! (CODE GEASS)
(Puniket 9) [Shiritsu Sakuranbo Shougakkou (Kumaki Todorokimaru, Misooden)] Mika Ganbaru Oshiete Ecchi na Obenkyou. (Sister Princess)
Yuri to Issho ni Obenkyou.
Obenkyou ≒ Sex
Shishunki no Obenkyou chapter 5+6