Kataomoi Rezubian ~Onii‑chan no Kanojo ni Koi suru Seifuku Rezubian~
Synopsis
Mizuho, a lesbian woman, harbors unrequited feelings for Nako, her brother's girlfriend. Nako, dissatisfied with her boyfriend's sex, makes masturbation a daily routine after sex... One day, while the brother is away, the two women find themselves alone, and the emotional tension between them surfaces. Without either fully realizing who initiates it, they share a kiss that leads them to a lesbian encounter. From that moment on, they are drawn into an intense and secret connection that changes their relationship and a unknown lewd side of themselves, all unbeknownst to the brother.
You might also like

Annabelle is the wise-beyond-her-years newcomer to an exclusive Catholic girls school. Having been expelled from her first two schools she's bound to stir some trouble. Sparks fly though when sexual chemistry appears between her and the Head of her dorm and English teacher, Simone Bradley. Annabelle pursues her relentlessly and until the end the older woman manages to avoid the law.
Loving Annabelle

In a loose retelling of the Revolutionary Girl Utena TV series, Utena Tenjou arrives at Ohtori Academy, only to be immediately swept up in a series of duels for the hand of her classmate Anthy Himemiya and the power she supposedly holds. At the same time, Utena reunites with Touga Kiryuu, a friend from her childhood who seems to know the secrets behind the duels. Utena must discover those secrets for herself, before the power that rules Ohtori claims her and her friends, new and old.
Revolutionary Girl Utena: The Movie

Yamada may be shy and rather clumsy, but the flower gardens at her school have always brought her happiness. Suddenly, a different sort of beauty catches her eye—the vivacious track star, Kase-san. Although the two girls don't seem to have much in common, they soon start a romance where each must learn an important lesson in tending their budding relationship. Can the two girls, so different from each other, learn how to make their first love blossom?
Kase-san and Morning Glories

Mitsuki and Yuya become stepsister and stepbrother because of their parents' marriage. Mitsuki can't get along with her new family and Yuya doesn't know how to approach his new stepsister. One day, Mitsuki becomes possessed by the spirit of Hiyori. Hiyori likes Yuya and believes Yuya can help her get to heaven. Hiyori places a leather chastity belt upon on Mitsuki and a plan takes place to help send Hiyori to heaven.
Recently, My Sister Is Unusual

Misuzu Moritani is an introvert who has always had difficulty interacting with her classmates, quickly becoming flustered whenever someone tries to talk to her. Sometimes, she will use her ability to stop time for three minutes to escape troublesome social situations. One day, as Misuzu watches the suspended environment around her, she observes that her classmate, Haruka Murakami, is somehow able to move despite her temporal influence. From that moment on, Misuzu experiences new wonders as she explores more of the world she has long avoided; no matter where time may take her, Misuzu can count on Haruka to always be at her side.
Fragtime

Two high school girls are best friends until one dates the other's older brother, who is totally his sister's nemesis.
The Edge of Seventeen

Maureen Trant and her younger sibling Dani share a strong connection, but local boy Court Foster threatens to throw their bond off balance. Dani and Court meet first and have a flirtatious rapport -- but when he meets Maureen, he falls hard and they begin a passionate affair. The new couple try to keep their love hidden from Dani, but she soon learns the truth, disavowing her sister. But a heartbreaking accident later reunites the girls.
The Man in the Moon

The wife of a pastor who preaches against homosexuality embarks on an affair with a female writer.
Elena Undone

A privileged girl and a charismatic boy's instant desire sparks a love affair made only more reckless by parents trying to keep them apart.
Endless Love

When Terry Griffith loses her high school's writing competition, she's convinced that it's because she's a girl. So Terry decides to change high schools and pose as a boy to prove her point. Her brother, Buddy, helps her pass as a guy so well that she is soon making friends with the boys at school, including the attractive Rick, who becomes her new best friend. But her gender-swapping makes things difficult when she falls in love with him.
Just One of the Guys

In the Yorkshire countryside, working-class tomboy Mona meets the exotic, pampered Tamsin. To seal their friendship, Mona introduces Tamsin to her born-again Christian brother and helps her spy on her adulterous father. Bound together by their secrets, the two girls see their friendship deepen and enter into dangerous waters.
My Summer of Love

A dethroned queen bee at a posh private high school strikes a secret deal with an unassuming new student to enact revenge on one another’s enemies.
Do Revenge

After a draining December, Sakuta is quickly nearing the end of his second year of high school. Since Mai is a third-year student, they don't have much time left together before graduation rolls around. Meanwhile, his sister, Kaede, is slowly but steadily venturing outdoors again. Just as she begins to find her footing, she announces her most ambitious goal yet—attending her brother's high school! Sakuta knows better than anyone how difficult this will be for Kaede, and he's ready to support her however he can. He's just not sure if that's what's best for her...or what she really wants...
Rascal Does Not Dream of a Sister Venturing Out

The star of a team of teenage crime fighters falls for the alluring villainess she must bring to justice.
D.E.B.S.

After starting at an upmarket boarding school, a teenage girl forms close friendships with her two older roommates. However, when she discovers that her new friends are lovers she finds herself caught in a complicated situation.
Lost and Delirious

When five lovely young girls who hate studying hire part-time tutor Futaro, he guides not only their education but also their hearts. Time spent has brought them all closer, with feelings growing within the girls and Futaro. As they finish their third year of high school and their last school festival approaches, they set their sights on what’s next. Is there a future with one of them and Futaro?
The Quintessential Quintuplets Movie

Lara Jean's love life goes from imaginary to out of control when her secret letters to every boy she's ever fallen for are mysteriously mailed out.
To All the Boys I've Loved Before

As Sasaki prepares for his college entrance exams, Miyano tries to make the most of their limited time together while grappling with his own emotions.
Sasaki and Miyano: Graduation

This intimate drama follows Rebecca, a woman who has kept her sexuality a secret from her friends but chooses to reveal it to a stranger. While Rebecca's revelations may not yield the results she expects, a perfect ending is still in reach.
A Perfect Ending

After some years of tension, Richard begins a sexual relationship with his sister Natalie. Now married, the relationship proves dangerously obsessional.

