18+ Oshiete♡Oneesan

Birds in a Cage
Itou may seem like a regular female elementary school teacher, but behind her facade lurks a lecherous and sadistic futanari witch who takes pleasure in having obscene sex with her young student, Aya Morizono. When the innocent and adorable Miki catches the pair in the act, she too becomes a part of Itou's perverted antics.

Tell Me Oneesan
Like many university students, Shinooka is frantically trying to complete his report the night before its deadline. His drunk friends partying in his room make this feat impossible, causing him to lose his cool and forcibly kick them out. One of Shinooka's upperclassmen, the beautiful and alluring Kikue Orisaka, refuses to leave, developing a heavy sexual tension between them.

Seeking Frontier
Taa and Hinako are a couple who certainly do not shy away from making their sex as enjoyable as possible. In fact, Hinako often asks her female friends for advice on ways to please him. Her petite figure, however, more often than not makes such kinks impossible. Determined to succeed, she persuades Taa to penetrate the "second hole."

Her Circumstances
Yui is a captivating high school enchantress who allows male students to use her body as they please. But this brings no pleasure to Yui. In fact, she does this simply for her own perverted entertainment. After so much unfinished and meaningless intercourse, even someone as resolute as Yui can become sexually frustrated. Fortunately, her charming underclassman of the same gender, Sayori, is available to quench her lust.

Far Behind Spring
Moe Shinohara is a young girl who is terrible at swimming, so much so that she finds it difficult to swim 25 meters! Due to her incompetence, she is forced to stay after school to partake in extra swimming lessons. However, Moe isn't the only inept swimmer; she is joined by the good-looking and silky-haired Aki Toiu. But as the two prepare in the changing room, Aki unexpectedly announces her passionate love for Moe.

Alone with Nee-chan
Atsushi and Chiemi may appear to be the perfect brother-sister duo, but in reality, their relationship is an immoral and incestous one. Having caught her younger brother masturbating to her panties, Chiemi finds opportunities to dubiously coerce Atsushi into sex when their parents are not around.

Spring Blossoming
Mayu is an adolescent girl who bears a forbidden and immoral lust for her own mother, who is oblivious to her daughter's carnal desires. So far, Mayu has satisfied her craving by masturbating in her bedroom. But when she walks in on her mother collecting some breast milk, she can no longer control her urges.

My Mother is a Witch
Mina is a cheerful and vibrant teenager who has a peculiar yet kind and caring mother. Mina always believed that her mother was practicing something strange behind her back, but all of her attempts to uncover her mother's secrets have inexplicably failed. One night, however, she catches her mother brewing trouble red-handed, forcing the young Mina to undergo a ritual deflowering...

Heap of Love
Kenji and Miyuki are a young couple sharing a single apartment. While Miyuki is a hard-working and mature woman, Kenji's behavior is still comparable to that of a child. He is lazy, unhelpful, and can become overly interested in other women. But despite his flaws, he still loves his partner deeply. And like most young couples, Kenji and Miyuki enjoy the sins of the flesh.