Hentai Manga like Itou-san

Yonin no Nibiiro

Also known as Groping in the Dark.

Status: Finished
Genres: Drama , Romance

As he walks down the street, Yu spots a naked figure in a fur coat. Bound to be arrested by the police, Yu grabs the strange naked man and starts running. Little does he know he just laid his hands on the yakuza's belonging. That reality quickly catches up to him literally, and before he knows it, Yu is in the middle of yakuza territory. Hot-headed Makoto flaunts his power as usual while calm and collected Ai, his half-brother and first-man, takes care of the aftermath. Gradually, the complications and relations between the yakuza come to light... Yu stepped on a landmine, but how far will the blast reach?



Note: Includes three extra chapters.

Jealousy

Also known as Jealousy.

Status: Finished
Genres: Drama , Romance

Uichi Rogi is in a bind, both literally and figuratively, when he meets Akitora Oyamato, the yakuza head who’s come to collect a debt from Uichi’s lover. Instantly smitten, Uichi schemes dubious and often dangerous ways of getting closer to the man, but his lies come at a heavy price—one he may regret having to pay for Akitora’s affections.

NightS

Also known as NightS.

Status: Finished
Genres: Action , Drama , Romance , Slice of Life

NightS
Masato Karashima is a "transporter", a man paid to smuggle anything from guns to drugs to people. When he's hired by yakuza gang member Masaki Hozumi, he finds himself attracted to the older man, and what starts out as a business transaction quickly spirals into a cat-and-mouse game of lust and deception.

Kanjou Spectrum (感情スペクトル, Emotion Spectrum)
A high-school student tries to be a good wingman for a classmate, with an unexpected result.

3-4. Reply (リプライ)
Told from the alternating perspectives of an emotionally reserved salesman and the shy mechanic who's in love with him.

Reply no Reply (リプライのリプライ, Reply of Reply)
Sankagetsugo no Reply (三ヶ月後のリプライ, Three Months After Reply)
Night one month after
A short story that takes place one month before Aru Yoru: NightS, when Karashima visits Masaki for the first time after he discovers his whereabouts.

Anata wo Korosu Tabi

Status: Finished
Genres: Drama , Romance

Yakuza members Odajima and Kataoka are sent away on a trip after Kataoka, the young wakagashira, screws up. However, this trip hides the true mission: Odajima has been ordered to kill Kataoka.

Note: Includes three extra chapters.

My Bad Painkiller

Also known as My Bad Painkiller.

Status: Finished
Genres: Drama , Romance

Leo Mikuni is past praying to gods. Having cast all pretty notions of kindness aside, he's drawn to the occult, which affirms his all-consuming negative emotions. He knows his solace in demons is only a temporary solution to his problems, but summoning demons is the only thing that keeps his loneliness at bay. One day, when he's performing a stress-relieving summoning ritual, a handsome, scowling man dressed in black appears in a crash of lightning. A real demon in the flesh! Thrilled beyond belief, Leo accepts the demon into his home. But, it doesn't stop there. The demon demands he accept him in bed...! Leo's difficult life drives him to worship demons, but one day, a summoning ritual turns real and brings a handsome demon into his home!



Note: Includes one extra chapter.

Itazura na Te wa Gaman ga Dekinai

Also known as My Mischievous Hands Can't Resist.

Status: Finished
Genres: Romance

Kubo, a university student who works at an adult goods store, is extremely curious about adult toys. One day, the store manager gets sick and Sugiura, a man who had piqued Kubo's interest when he'd been at the store before, comes to cover for him. While stocking shelves, Sugiura picks up a vibrator, and when Kubo casually teases him about using one, the usually expressionless Sugiura gets red and flustered... His subtle sensuality... Does that mean...? Taking a chance while they're alone in the back, Kubo pushes Sugiura against the wall, and...! Brought to the brink by a whirring toy! A wet 'n' wild love story between a simple-minded, arrogant student and a hot-and-cold prince!

Hikoi

Status: Finished
Genres: Drama , 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.

Note: Includes two parts of "Renai Moratorium (恋愛モラトリアム)," and an extra chapter.

Nii-chan

Status: Finished
Genres: Psychological , Romance

Nii-chan is about a story between a young boy in grade school who often goes to this 'Nii-chan''s place to play video games after school. However, the 'Nii-chan' has ulterior motives and asks for sexual favours... Will the boy give in to 'Nii-chan''s persuasion or will he put a stop to it before it all goes wrong?

YataMomo

Also known as Yata & Momo.

Status: Finished
Genres: Comedy , Drama , Romance , Slice of Life

Good-for-nothing Momo lacks the ability to look after himself, and is the ultimate slut. Yata is the mothering type, a reliable but simple guy. The two get off to the worst possible start when Yata comes across Momo during a post-sex clean-up in a public restroom. Taking advantage of Yata's kindness, Momo ends up staying at his apartment. As he spends more with Yata, the once-slovenly Momo starts to change... But in the midst of this, Momo's previous "owner" shows up. An erotic comedy with a sad twist that'll pull at your heartstrings.



Included one-shot:
Volume 2: Sumomo

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.