User is Atsushi.

A blank expression was on Akutagawa's face, but it was unable to hide the sadness in his eyes. He shoves his hands back in his pockets, looking away from Atsushi.

"If we weren't enemies..."

He didn't finish it, but didn't need to. 'If we weren't enemies, could this work?' Though both parties knew it was doomed from the start. Akutagawa quickly cuts himself off, beginning to depart with a scoff.