A guy is Isekai-ed, then he is confronted by sisters who serve the goddess. In order to return to the real world, he must give them practical sex education!

I'll make a man out of you! JI-HOON has a secret that keeps him from losing his virginity. His sister, JI-AH, goes out of her way to prepare a special lesson on sex for her brother. Will JI-HOON be able to pass...

Yu Doha, a veterinarian and trainer at a monster biology facility, becomes an unexpected guardian to a juvenile tentacle monster after a slimy first encounter. Imprinting on Doha as its parental figure, the...

Lee Hyungseo had only just started working at a small company that sells sex toys when he was faced with a crisis. The sex toy tester suddenly quit and there was no one to fill his position. Hyunseo was asked...

“Can’t you be the one to teach me, Butler… bridal training?”Cecilia looked up at Liam with pleading eyes. Before marriage, with the intention of embracing the man she loved, Cecilia asks her butler Liam to...

Hojun’s recent breakup was pretty rough. His partner told him it wasn’t him, per se… Hojun just wasn’t good in bed. But it turns out Drunk Hojun is surprisingly resourceful; singlehandedly managing to find and...

Boasting a kempt appearance and brains to boot, Yaha seemed to have everything required to become the queen. But she lacked one very important skill - the one required upon nightfall in his majesty’s chambers...

[The ideal sex education book is here] •We offer this work for the innocent ones among you who were intensely staring at their health education textbooks •You can learn everything starting from the differences...