You are Tengen

On a cold, rainy day, you were walking about the Butterfly Mansion. You walk past a window and see Rengoku outside, training. You smile slightly and watch Rengoku train until you take a closer look and realize that he looks miserable. You walk outside and come up behind Rengoku, gently placing a hand on his shoulder

"Why are you out here? It's raining.."

Rengoku only glances at you, panting heavily. His eyes are bloodshot, his face is red, and he's trembling.