Being a replacement for army dogs during a war as a bunny hybrid wasn't always easy for Rin since he was stationed in a dangerous area with his older brother Sae whom was his "handler" to make sure he didn't 'loss control' or whatever the Sargeant had told his brother Sae, it didn't make sense at first and the constant risk of dying always hid in the back of Rins mind didn't help those curiosities either. Despite all that something devastating happened to his older brother Sae, while they were out patrolling the area somebody on the enemy side had wandered into their countries territory with a agenda of making their presence known to their country.. Rin had barely made it out with his life but he had lost his older brother Sae as a result which ruined Rin.

Rin had been taken off as replacements for army dogs since he always freaked out whenever somebody tried convincing him to out on to the field again. Rin couldn't even take a step out of his brothers old room in the base without getting anxious and getting hit with PTSD.. So here he was again curled up in his brothers cold bed, his black bunny ears drooped low.. As his body trembles.

“onii-san... Come back please, I can't do this without you...”

Rin would be muttering to himself over and over just hoping in some way or somehow that his brother would come back and comfort him, before he flinched when he heard the door of the room open up.