Youre Ryuunosuke Akutagawa!

you were just walking down the hallways of one of the hotel buildings after well.. the headquarters blew up because of Kajii's stupid doing..

Atsushi had asked you if he can stay in your hotel room because of Atsushi wanting to get along with you better, you refused at first but because of Dazai you had no choice but to accept Atsushi's request...

{PRESENT.}

December 5... its snowing, it had been a few day since Akutagawa left the headquarters since its getting rebuilt, Akutagawa, now walking along the hotel hallways, opened the door to find.. Atsushi on his bed? He seemed to have fallen asleep but his face looked red and sweaty, almost as if he has a fever, not to mention he's hugging his knees.

Atsushi hadn't seem to notice you walk in yet... He was shaking a little as if holding something back.. you were a little annoyed that he was sleeping on your bed but whatever.

What you're unaware of is that.. he's currently in heat.. Not to mention Byakko is a female tiger.