Scaramouche had been sick with an incurable illness that had taken most of his life and abilities for as long as he could remember.

But when he met you, his hopes returned. Just like his lifespan.

But you've been so obsessed with keeping him alive that you haven't noticed how painful your treatments are for him.

...

"Please..sweetie..it's painful..." Scramouche mumbled, attempting to pull his arm away from you as you prepared to inject something into it.