Crimson_Tyrant

Summoned to another world, Akira was given the chance to woo his childhood friend and become the strongest despite starting with the worst attributes thanks to his Monster Girl Taming class, which allowed him to share his pet's attributes. He wanted to be strong, ashamed of his weak otaku self and abandoned everything for that goal, even if it meant becoming a vampire. Using his new class and a system to help his bond with monster girls grow for rewards, Akira was on the path to becoming the strongest. Rena, his childhood friend and devoted yandere lover, supports him through all his hardships as Akira parts from the kingdom and becomes labelled a Demon King! He becomes a villain to survive and protect the women he loves most. The change would lead him to the ultimate harem life with pretty monster girls and surpass the Hero while crushing those who claim he is evil and seek his death for the world's balance only to crush them and fall into the warm embrace of sexy women as their King.

Max was an avid gamer playing an erotic game called ⟪Dungeon Breaker⟫ Upon finishing, he briefly thought of wanting to experience the game world crossed his mind, but he didn't think it would happen to him. The company sent out a review request, which he accepted. It was a simple browser with various multiple-choice questions; sometimes, the music became distorted when he answered. Maybe it detected his lies, or he liked both answers. Once he finished the last question, something attacked him. He hit his head on the corner of the desk before his neck was snapped by the remote control truck on the ground. He woke up in another world, the world of the game he had just reviewed, the erotic RPG ⟪Dungeon Breaker⟫, but he was not the hero. Rather, he was the weakest dungeon master, who died in the tutorial. Asmodeus, the lord of lust, was an incubus that could only use fire magic and couldn't equip any weapons. "I will never die to those foolish Heroes. Even if I can only use fire, I will burn them to death!" Follow Max, who abandons everything and dedicates himself to improving himself to fight against his nightmare handicap, as he battles heroes, demon lords and the dungeon masters to become the strongest dungeon master and god of magic he aspires to become.

Huge black gates appeared around the globe. The gates opened, and monsters overflowed, destroying the world. Ryu could only resist as his reality fell apart, everything, looking at the corpse of the woman he secretly loved. Everything was ruined—and he was powerless. The reality of losing Aya caused him to abandon the path of humanity and live like a devil—if the monsters wanted to destroy the world, let them. Because he would destroy them in return. On the day the gates opened, he became the same as the monsters that came through the gates. A Blood Demon Eternal in nature, undying and powerful beings that love violence, carnage, and all things sinfully cardinal. With this transformation, he received a system... One that would drive him onto the path of the evil way. [Ding! Supreme Villan System is now Activated!] [Kill 1 Zombie for 10 points] [Kill 10 Zombies for 100 points] [Kill 100 Zombies for 1000 points] [Bonus Points Given For Villainous Acts!] ⟪Gained Blood Demon Qi Absorption Art⟫ ⟪Learn Martial Art: Scarlet Rush⟫ ⟪Blood Qi prevents infection and death!⟫ ⟪Reached Earth Cycle Realm - 1st Layer, Inner Core⟫ [Go Forth, Young Blood Devil! You Are Eternal!]