Hentai Manga like Kuchi no Naka no Shita

3-ui Siseon

Also known as The Third Perspective.

Status: Finished
Genres: Drama , Hentai , Psychological

Perpetually hiding behind a smile to survive his cruel family and stifling college life, Kwon Hyeon is drowning in anxiety and despair. It’s not like he chose to be born into money, but between his father’s demands to uphold the family’s reputation and his classmates’ constant gossiping, the only respite he has is Baek Do-Won, his psychiatrist. But everything changes when the mysterious Do-Won inducts Hyeon into his secret other life. Infatuated with Do-Won and driven by his self-destructive instincts, Hyeon is drawn into a world of twisted desire and pleasure.

3worui Boreumeul Josimhara

Also known as Beware the Ides of March.

Status: Releasing
Genres: Drama , Psychological , Romance

After being released from prison, former gangster Park Mok-Hwa runs a flower shop with the help of Kim Jeong-Ae. Kim Nak-Won, a corrupt police officer who does whatever he wants to satisfy his selfish desires, is under probation while investigating the 'Tongyang PK' case. However, Park Mok-Hwa refuses to cooperate and submit to the greedy police officer's wishes. This leaves the corrupt Kim Nak-Won no choice but to use force to get what he desires...

Onward

Also known as Onward.

Status: Releasing
Genres: Drama , Romance

Sometimes one splash is all it takes to make waves. Swimming prodigy Woo Seungwon, whose very being is vast and endless like the ocean, runs into former a-list singer Doh Si-on. Si-on, now a businessman trying to stay afloat, is doing his best to move forward with his life; but the weight of the world only drags him down, as if he is struggling to crawl through a swamp. Taking an interest in Seungwon, Si-on offers him the opportunity to make some extra money as his housekeeper…and perhaps do a little extra work on the side…

Yankee Onna to Shota

Status: Finished
Genres: Hentai

Two delinquent girls were surprised when they took off their classmate's pants.

Vivarium

Also known as Vivarium.

Status: Finished
Genres: Drama , Psychological , Romance

Yoo Heesung is…not a nice person, to say the least. Arrogant, selfish, and criminally lacking in loyalty. So when he decides to steal from his childhood friend, their years of history don’t really weigh upon his mind. Until he wakes up, head pounding, tied to the bed of a dingy room?! Choi Jaeyeon knows just how awful Heesung can be, and is determined to teach him a lesson he will never forget.

Note: Chapter count includes an epilogue and 6 side story chapters.