Hentai Manga like Ikkyuu Nyuukon

Onaho Kyoushitsu: Joshi Zenin Ninshin Keikaku

Status: Finished
Genres: Hentai

1-7. Onaho Kyoushitsu (オナホ教室); Comic Bavel 2018-05, 08, 11, 2019-01, 05, 08, 11
Kutsushitauri no Onna (靴下売りの少女); Comic Bavel 2018-01
Erogenous zone - another ; Comic Bavel 2020-03

Note: Chapter 9 was included in the digital limited edition.

Choro In Harem

Status: Finished
Genres: Hentai

1-7. Eroge Sekai de Daini no Jinsei (エロゲ世界で第二の人生); COMIC Penguin Club 2021-07, 08, 09, 10, 11, 12, 2022-01
Oshikake Sister (おしかけシスター); COMIC Penguin Club 2019-04
Jimi Gal (地味ギャル); COMIC Penguin Club 2019-05

Boy Meets Harem

Status: Finished
Genres: Hentai

Nangoku♥Harem (南国♥ハーレム); Comic Mujin 2012-10
Yukiyama♥Harem (雪山♥ハーレム); Comic Mujin 2013-01
3-4. Nettai♥Harem (熱帯♥ハーレム); Comic Mujin 2013-03, 2013-05
Deatte♥Harem (出会って♥ハーレム); Comic Mujin 2012-03

Hot Teacher

Status: Finished
Genres: Hentai

A wife gets a call from her husband, claims, that she has a friend for dinner, hangs up and... proceeds to have passionate sex with this "friend", who is actually a student and lover of hers.

Chichiiro Toiki

Also known as Chichiiro Toiki.

Status: Finished
Genres: Hentai

Please Educat Me!
2-5. Love Square Panic
Master♥Bation
Iinchou no Kagai Jugyou (Class President's Extracurricular Lesson)
Trouble Instructor
Saimin Renai Joutatsuhou

Eroge de Subete wa Kaiketsu Dekiru!

Status: Finished
Genres: Hentai

1-6. Eroge de Subete wa Kaiketsu Dekiru! (エロゲで全ては解決できる！); Comic Hotmilk 2018-03, 06, 2019-01, 05, 10, 2020-05
Love Tasting (LOVEテイスティング); Comic Hotmilk 2017-12
Finder Love (ファインダーLove); Comic Hotmilk 2017-09

Inma no Mikata!

Also known as Succubi Ally!.

Status: Finished
Genres: Hentai

Tadahira Masato is a twenty-five-year-old high school graduate. He once dreamed of getting a job that would benefit the world and humanity, but he has had no luck and so remains unemployed. When he is sitting at a bench, heartbroken, two succubi offer him a job. Turns out, simply being a rare 100% human, and therefore having delicious seed, earns him a very cushy job.

Chapter names:
Tada yori Takai mono wa nai
Kyuusei-nushi no Oshigoto wa
Hatsujou Chinpo to Kamonegi Mother
Me ni wa Me wo, Katabutsu ni wa Kenbutsu wo
Kyuujitsu wa Yasumu Jikan ga Nai no Desu
Shasei wa Tsuzuku yo Doko made mo