What to Do If I Become the Villain's Daughter - Chapter 2: I am just his burden

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

Do you want to know What happens if a cultured man gets a chance to try his hidden Degenerate and taboo thoughts in real life?Yang Chen, Our Main character, gets this chance. Yang Chen grew up with an obsessive love for older women, and all of his wishes came true when Ambulance-kun sent him into the cycle of reincarnation.He reincarnates in Seraphia, a parallel world of Earth. Several hundred years ago, Abyssal trials descended on this world. people were given role-playing missions after being dragged into the underworld.Yang Chen Awakens the Primordial perverted system and System is a fallen angel and an overpowered milf.With her help, He did many perverted things with the roles assigned to him.Yang Chen did taboo sins and conquered milfs as a Village chief, Principal, Masseur, Doctor, Teacher, etc...When He was done with ghost humans, Yang Chen's claws reached out to other races, such as vampires, Succubus, Zombies, foxes, etc...

10 years searching for his lost sibling.

One-eyed Wolf Lecan is a skilled adventurer who has conquered many dungeons all over the world. He had been going solo for a long time, but in the last three years, he’s had a partner. That partner jumps into the black hole together with Lecan, and both go their separate ways as they fall into another world. Dungeons and magical beasts also exist in that world. After learning the native language, Lecan goes on a journey. Meeting a good teacher, Lecan studies medicine making and magic under that teacher, and begins his dungeon explorations for real.