Protoganist's Sidekick Fights Back - Chapter 25: Passionate Night-2 (R-18)

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

She was stupidly in love with him. Because of him, she became rude and unreasonable, overbearing, jealous, insane. But he did not spare a glance to her. Married for two years, he didn’t favor her once, letting her become the laughing stock of the whole world. Eventually, she ended up in an affair, leading to her tragic death.

Three years ago, the animals and plants on Earth underwent crazy and unexplainable changes that included transformations, reversions, and the addition of otherworldly species. And it was the start of a brand-new type of profession in the new generation of humanity – Monster Trainers, people who specialized in taming monsters.

America, 1980. No sooner had Xu Yi transmigrated than he was put on the dissection table; then he gradually came to understand the true nature of this world. “Studying medicine can’t exorcise undead demons; I must become an exorcist!” he resolved silently to himself. On a misty, rain-soaked night. “Miss Evil Spirit over there, the night is cold and damp; be careful not to catch a chill! Come over here and warm yourself by the fire!” Xu Yi said, holding a lighter, as the pale gold flame slowly approached the other. The Evil Spirit shrank back, looking at Xu Yi with fear. “Don’t be afraid, I just want to warm you up...” Xu Yi’s face broke into a warm smile, “by setting you on fire!” Ding dong! Ding dong! “Sign-in at the Land of Fear successful, Resurrection Coin awarded!” “Synthesis pathway requirements met, do you wish to combine the following entries?” Psychic + Scholar + Painter = Psychic Painter! Saintly Offspring + Gunfight Technique + Revolver Mastery = Holy Gunslinger! Undead + Revelation + Holy Nation = God!