Hentai Manga like Koushinchou Volley-bu no Seiso-kei Kanojo ga Senpai no Mono ni Natte Shimau Ichibushijuu

Seiso Kanojo, Ochiru.

Also known as Good GF Gone Bad.

Status: Finished
Genres: Hentai

Even though it's against the school rules for students to date, Tsukimi and Takagi have been going steady in secret for a whole 6 months. On a date at the amusement park, they finally share their first kiss, only for it to be caught on camera by an interloper. When the would-be paparazzo threatens to show the faculty, Tsukimi, being the good girl she is, goes along with his demands in order to preserve her and her boyfriend's academic standing.

Boyish Kanojo wa Senpai no Iro ni Somaru

Status: Finished
Genres: Hentai

Cracked Crystal

Status: Finished
Genres: Hentai

Shisaienbu

Status: Finished
Genres: Hentai

Released at COMIC Anthurium 2017-04.

Backstage

Status: Finished
Genres: Hentai

Joshi Rikujoubu Harem Training

Status: Finished
Genres: Hentai , Romance

Ever since his leg got injured, Miyamoto Wataru's athletic career has been on hold. In the meantime, he's been offered to coach the track and field club at the local girls' school.

Notes:
Originally serialized under the title Rikujoubu-in to Asedaku Ecchi: Coach! Shidou Shite Kudasai! (陸上部員と汗だくえっち～コーチ！指導してください！).
Split into 54 episodes on mobile reading platforms.

Shoutengai no Ana Tsuma-tachi

Status: Finished
Genres: Hentai

Note: A live-action AV adaptation (URE-066) was released on May 25th, 2021 and the second part (URE-082) on July 26th, 2022.

Touchuukasou

Status: Finished
Genres: Hentai

Mariko is kind and motherly. Yuina is sassy with a tight body. The two sisters will cry out like cicadas, during the sweltering summer...

Tatta Hitori no Youheidan

Status: Finished
Genres: Hentai , Supernatural

Shinzui Summer Ver.

Status: Finished
Genres: Hentai

Volume 1:
Natsu★Mama (なつ★まま) [Fueta Kishi]
Sayaka-san, a young beautiful wife got stood up by her husband before going to the beach, then she decides to go without him. Futari no Hanabi (ふたりの花火) [Utamaro]
Pool Daisakusen (プール大作戦!) [Kurosawa Kiyotaka]
Long Summer Vacation (ロングサマーバケーション) [民兵1号]
Kanojo no Kankei (彼女の関係) [Haikawa Hemlen]

Volume 2:
Homecoming (帰省, Kisei) [Yukiyoshi Mamizu]
Make Love to My Ass (お尻であいして, Oshiri de Aishite) [Ichitaka]
Kento is out on a date with his girlfriend, Kashima Ayumi. They’ve been together for 3 months. In those 3 months though, Ayumi’s picked up a rather kinky habit. A habit that’s left her unsatisfied with regular sex. She wants to tell Kento about it, but she can’t find the courage to do so because she’s afraid that Kento will hate her if he finds about it. Well, due to the intervention of some uninvited guests, her secret will be exposed in a big way. Will Kento be able to handle the sudden revelation and the events that follow? Senpai Only Love (センパイ オンリイ ラブ) [Kurokawa IZUMI]
Escalation*Summer (エスカレーション★サマー) [Kumoi Takashi]
Summer x Beach = Dangerous Equation (夏×海＝危険な方程式, Natsu x Umi = Kiken na Houteishiki) [Carn]

Volume 3:
Histeric Slave [jony]
Natsu no Omoide (夏の思い出) [ShindoL]
Tanoshii Natsuyasumi (たのしい夏休み) [Arai Kei]
Narizon (なりぞん) [Mahiruno Kagerou]
Subete wo Kaeta Ichinichi (すべてを変えた一日) [Misasagi Tasuku]
The swim instructor has a dirty little secret that would be disastrous if it was exposed to the public. Perfect blackmailing substance.