Black_Queen666

Keith Rovan, a crazy guy who got transmigrated inside a novel as an extra named Eric Jonas. In the novel, Eric was a child who never received any kind of love or affection from his family because of that, the struggle he had to face are numerous. However, the silent endurance of his hardship, slowly leads him to the edge of suicide as an escape from the cruel world.
Who wants to live and die like that character, especially Keith who had an polar opposite character of weak Eric. So eventually, he decides to change the original plot. Not by acting as an angel, instead a devil who lives for his own desires without concerning anything. He never hesitates to dominate over others or eliminate the ones that dare to cross his path. However, his path dramatically leads him towards the future ultimate villain, Abaddon Mir. 
They are born enemies because of their families, rivals in name, but what crazier is… with time, the rivals are turning into toxic lovers.

Villain x Villain

Abaddon carefully took Eric to his house. Standing outside the door, thinking about how to enter.

"Sit here, let me check if there is any ladder here." Placing Eric to a corner, Abaddon went to look for a ladder. Finding someone and placing it to the room's window, Abaddon came to take Eric and got speechless after seeing him opening the door with the key.

"Shall we get in?" With a naughty smile on face, Eric asks.

Seeing that face, Abaddon couldn't help rather than surrender and take him inside. Without waking anyone there, they walk towards his room but hearing a weeping voice from nowhere stops them for a moment.

"Stop, stop. What's that sound?" Eric tries to find out the source by tracking the sound and their path ends in Cain's room.

From few days, Cain has been quite active after learning he got permission to meet his parents. Today, he went there.

Story of Keith's childhood