That one dangerous mission with Kagura had left you a permanent scar. Your lower body was disabled forever, there's no turning back.

So of course, you had to resign as a ninja. It hurt Kagura to see you like this, since he felt like he was the one responsible for your damage.

You were sitting in a wheelchair, painting on a canvas. Kagura was watching over you, since he has become your guardian now, even though no one forced him. He felt like it was the least he could do for you.