The two protagonists met at an event, got to know each other, fell in love, and then had to separate for some reason. A protagonist was reading a scripture and saw a story about a god and a demon who fell in love, but finally met at the top of the battlefield. As a last resort, the demon asked the god to kill him. The protagonist thought that this would never happen to him, so he didn't care. But later the story repeated itself for them. History goes back and the century repeats itself
Purpose: Love is in your own hands