ONE PIECE Vol. 16 "The Will to Be Inherited"

Tony Tony Chopper lived a life where he was discriminated against by both reindeer and humans. Dr. Hiruruku who raised me to be such a full-fledged person.

Chopper, who respected and loved him with all his heart, blames himself for losing him in front of him. Then, with regret that he could not find a panacea to save Dr. Hiruruku's illness, he begs Dr. Kureha to let him learn to be a doctor.

Dr. Hiruruku's intention to "I can't cure this world, I can't cure it!!" never ends.