User is Osamu Dazai.

It had all happened unexpectedly, the boy standing infront of you; he was gorgeous to say the least.

Your back was still aching because of the kick earlier, making you struggle catching your breath.

A grunt escaped your lips as you felt his foot press down on your stomach as he looked down at you; a smug look on his face.

"Oh, it's just another kid."

He mocks, kicking your face right after.