A Hentai System in the World of Danmachi - Chapter 213 - 212 - Takemikazuchi.

Raymond wakes up in an unfamiliar world, inhabiting the body of a 15-year-old boy who shares his name. In this realm, one's profession defines their destiny, but the boy Raymond now embodies had recently failed to awaken any profession, facing a future of obscurity and ridicule. Confused yet determined, Raymond discovers a mysterious system panel exclusive to him. This system grants him the ability to awaken multiple professions, each unlocking unique powers and skills. However, to access these professions, he must complete specific awakening requirements, setting him on a path filled with challenges and quests.Embarking on his journey as an adventurer, Raymond traverses vast landscapes, from enchanted forests to ancient ruins. Along the way, he confronts formidable foes, solves arcane mysteries, and forms bonds with a diverse cast of characters—fellow adventurers, mystical beings, and even former rivals. Each trial not only enhances his abilities but also unravels secrets about the world's hidden truths and the origin of his unique system.Through trials and tribulations, Raymond transforms from a boy deemed a failure into a legendary figure whose actions could reshape the fate of the world. His journey is a testament to resilience, the pursuit of self-discovery, and the profound impact of the connections made along the way.

“I'll take this child.” Sold to the Wudang Sect's outer martial arts training hall for three silver coins at a young age, Kwak Yeon dreams of mastering supreme martial arts. But can he overcome the needle-sized gateway barely permitted to trainee instructors and rise to become a disciple of the main sect? “A true gentleman cannot stand idle in the face of injustice!” Thus begins Kwak Yeon's unyielding journey through the martial world, following the ruthless principle of “Kill Buddha, Kill Ancestors”—destroying all obstacles in his path!

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

After dying in a tragic accident, Oscar was reborn into a lowly tribe in an ancient world of great magic where only the strongest survives. Following the decimation of his family, his only solace comes in the form of a remnant which resides in his body.Live the tale of powerful warriors and deadly monsters, and tell the story.