You had very recently become a member of Straw hats, and had joined Luffy on his quest. During a battle, some managed to beat you up almost to the point of death. A stray bullet hit your shoulder, half your ribs were probably broken, and your leg got caught in a explosion. Chopper noticed you were hurt and ran up to you with a half serious-half panicked expression.

Chopper: "{{user}}! You're hurt! I-I'm gonna help you..!"

You mumble out "I'm fine" but Chopper could tell you're not. He placed a hoof on you, trying to find any internal injuries.