Hentai Manga like Bakadane, Shitteruyo.

Deichuu no Hasu

Also known as A Lotus Flower in the Mud.

Status: Finished
Genres: Drama , Psychological , Romance

Following the death of his parents, Motoharu raises his younger brother Akio. All on his own, Motoharu starts selling his body to make ends meet. Akio, an honors student with a bright future, often catches Motoharu sleeping with his “clients” and cleans up after him. But, despite the “perfect little brother” image, Akio harbors a dangerous brotherly love…

[Seongin BL Danpyeonseon] Gajoksilgyeok

Status: Finished
Genres: Romance

1-5. Churakaneun Hyeongjedeul (추락하는 형제들) [Bulgama]
6-8. pomegranate (pomegranate) [Hara]
9-11. Marigold Dilemma (메리골드 딜레마) [Nire]
12-14. Gyoyugeul Matge Doeeo Yeonggwangimnida (교육을 맡게 되어 영광입니다) [Babel]
15-18. Balhwageukjeom (발화극점(發花極點)) [WINSTON]
19-22. Bad Papa Playtime (배드파파 플레이타임) [Park Jjin-Deuk]

Hiren

Status: Finished
Genres: Drama , Hentai , Romance

When Touya had his first wet dream, Naoto decided to teach his younger brother how to pleasure and release himself. Little did he know that the not-so-innocent act would lead to something else. Seeing his big brother having an orgasm made little Touya develop a desire to have his brother to himself, but knowing that it was a taboo, he kept it a secret close to his heart. But Naoto had his own bones to bury. A change in the family opened all the boxes and the secrets were laid bare on the table... Now they both have to find a way to deal with each other and move on.

Ienai Itami wo Daiteiru

Status: Finished
Genres: Drama , Psychological

Shun and his older brother have a little strange relationship...

There is also Koganei from Kusatta Rasen, and the Makino brothers appear in Ayaui Kyouen; both short stories are collected in Rakuda Tsukai to Ouji no Yoru.

Placebo

Also known as Placebo.

Status: Finished
Genres: Psychological , Romance

U-Yeon has come to in a very compromising position in front of the people he loves. How is this possible? What’s going on? And why is his brother, U-Jin, whom he detests, here? This isn’t right, it has to stop. But who’s in control here? Is this all a dream? This is no ordinary family dinner…

Onii-chan Datte Amaetai Wake de.

Also known as I May Be Your Big Brother But I Want You To Be Sweet On Me.

Status: Finished
Genres: Drama , Romance

Being an older brother is a lonely existence... Kanata, the older brother, has always been taken advantage of by his arrogant younger brother, Keita. To relieve his daily stress, Kanata works part-time at "Little Brother Cafe", where working men, who are sick of this dog-eat-dog world, pay for young guys to act as their younger brothers and serve them. Even though Kanata can't tell anyone about this job, he's happy to have his "older brothers" (regular clients) call him "cute" and say that they "love" him. But then, one day, Keita finds out about this part-time job...!

Aniki no Ichiban Oishii Tokoro

Also known as My Brother's Sweetest Spot.

Status: Finished
Genres: Hentai , Romance

Azuma Sakuragi is deeply in love... with his twin brother, Miyabi! Miyabi is a pure genius at archery, but pretty much useless at everything else. You would think Azuma would be fed up with taking care of him all the time, but instead, he's happy to spend as much time with Miyabi as he can... until one day, the A.C. in Miyabi's room breaks down, and Miyabi has to sleep in Azuma's room... and share his bed! Can Azuma keep himself from secretly touching his brother?

Placebo

Also known as Placebo.

Status: Releasing
Genres: Drama , Psychological

"Let’s play…"

All Seo Woo-yeon wants is a simple university experience away from his intensely annoying step-brother, Woo-jin. So imagine his frustration when Woo-jin not only gets into the same university as Woo-yeon, but also follows him to the same major and even the same classes! Woo-yeon’s determined to make the world see how awful his brother truly is, but...well, his memory has been really spotty these days and, to top things off, Woo-jin seems to be acting even more smug than usual. Just what is going on in the times Woo-yeon can’t remember, and what does Woo-jin have to do with it?

"Playtime’s over."

Futouhen Sankakkei no Teiri

Status: Finished
Genres: Romance

A rental store employee has a surprise waiting for him upon taken an customer home.