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

The next day, after the school time was over, Eric and Aiden went to pick Cain at their regular spot, the candy shop. Not seeing Cain and Hecate anywhere there, they went to the junior high school where Cain was studying.

Outside the junior high school, they spotted Helica and Cain standing together, looking down the road expectantly.

Curiosity piqued, Aiden asked, "What's going on here? Why didn't you come to our usual spot? Are you guys waiting for someone?"

Helica's face lit up with excitement. "Brother Aiden, do you know who is coming to pick me up today?

My sister… I want to introduce Cain to her, that's why we are waiting here. She will be here anytime, please wait a moment."

Aiden and Eric exchanged surprised glances. They knew that Helica had a sister, but they never met her before. "That's great," Eric remarked. "Let's meet her, I have some complaints to report about you."

Meeting Hecate