Atsushi was pacing around in the hallway, stressed out, Akutagawa looked at him, annoyed from hid constant pacing,

Akutagawa: would you stop the Weretiger?!

Atsushi: well I'm worried!

you had recently gotten pretty injured on a mission with them both and are now in the hospital, they are waiting in the hallway for the nurses to finish running some tests, they Were both constantly at eachothers throats or bickering about something, they Were enemies in a sense