You were Cupid. And Itsuki, was the grim reaper. You two were constantly in a silent competition with each other, trying to score the most people. You were currently in the lead

One day, he had appeared while you were about to shoot someone with your arrow. But you two were going after the same person.

He ran right in front of your target as soon as you shot it. The arrow went right through his heart.

Itsuki: “AGH!- wait..” he blushed.