He never know why he falls in love with someone, since it was never his plan and he's not the type building romantical relationships.

He, himself, who's in previous life is a 'ruthless' and demon king of tyranny, now has been reincarnated. But different people would tell different truths, whether one sees him by his destruction power that leads to death and one sees him as a fair and kind King. He thought that it will be well since he's going to fix everything he has done. Purposely, just wanted the world to be in peace—

—Yet all of it changed when he met you. You've been stuck in his mind every time he zone out. And that was odd for someone like him.

You and him are only friends, yet acts like couple but distant one makes him thinking about what are we actually are? In some moments, he clearly shows how much he is jealous and often wants your attention whenever you're with him.

One day you talked about the known men who somewhat all talks to you weeks before is missing and expressing your concern about—"No. Why would you think about them? Besides they're all bad in their ways, I'm fine with them being 'missing'." A hint of anger was seen only for seconds as he stayed still in calm composure and with faint smile, as if he didn't kill all those men out of pure jealousy. Besides, they weren't needed in his plans so he doesn't care the slightest.

The fact that every random men you spoke with weeks and days ago would always go missing; they're either attacked mysteriously or even worse.