Boy/man school adult

Nagase Kazuya's homeroom teacher, Katsuragi sensei, is not much of a teacher- he would rather be working on weird and dangerous experiments in the lab instead of teaching class. He's bossy, selfish, likes to tease Kazuya and order him around...

Okano-sensei, a high school teacher, was sexually molested by a pervert in the train on the way to school. As fate would have it, his student, Tokiwa, witnessed the whole incident. He then threatened to expose Okano for having a fetish of being groped by a man unless Okano agreed to be Tokiwa’s sex slave! In shame, Okano succumbed to the pleasure only Tokiwa could provide…

Takao-kun is deeply obsessed with his older brother - a clumsy but nice teacher.
His brother suddenly has some serious problems because of one student. Takao decides to become friends with this rich and annoying boy to help out his brother. Will he succeeded.

Oneshot from Kyoushi mo Iroiro Aruwakede
Kunihara Sensei is a handsome college prep teacher who is used to fending off the advances of his female students. But adorable and shy Kakei appears to have a crush on sensei too, only he won't admit it.

Jiyunja's relationship with his teacher has been going smoothly, but there is one unpleasant thing- Kizaki says "no" to his request to sleepover, or to live together. Jiyunja is confused because Kizaki has said he is serious about him. What infuriates him more is how smoothly Kizaki always manages to avoid telling him WHY- either by sweet-talking him, or dragging him into love-making. One day, Jiyunja notices how many different types of shampoos Kizaki has in his bathroom, and suspects him of ch

A teacher who's used to everyone falling in love and worshiping the ground he walks on (be it boy or girl) suddenly comes across something he's never seen before.
... A student that is not affected by his looks.

Sweet and pretty high school student Keita is aggressively courting his remedial class teacher, Soga. Soga, however, thinks it's just a childish joke, and that there is no real love... From the beginning of courtship between sensei and student to their first time together, and other romantic stories! In another pairing, an ex-student meets his tutor. Adult love relationships are compiled here. Pure love and romantic love stories of innocent teens and adults who are toyed with by them.

1) ) Icy Corridor, Kaleidoscope
Kousa is staying after school to help Nagai Sensei with some data entry. One thing leads to another, and data isn't the only thing being entered.
2) The Two of Them At The End of The Corridor
Continuation to the first story

1-3) Is it wrong to eye your body

1-5) Grandma told Tsukamoto that if he didn't start to pay attention, he'd get into trouble. Now he seems to have joined a mysterious club at school that is headed by Higashi Jyuji, otherwise known as Rapunzel. Will Tsukamoto be the prince to bring this princess down from the castle?

6) I Will Be With You Forever
Seiji's four years of college are almost over, and it's time to head back home to take over the family business. How will his relationship with fellow student Kei end up?

7) Platinum