Doctor Hunt

The Doctor Hunt (医者狩り) is an event that took place eight years prior to the start of the series, on Drum Island.

History
Having to be a king, Wapol saw himself as worthy and powerful that he decided to tighten his grip on Drum Kingdom. Since Drum was known for its advanced medical knowledge, Wapol decided to make people beg at his feet by taking away the doctors.

The Hunt
Wapol then sent out his army to capture any doctors and force them to live in his Snow Castle, any doctors who refused to be a subject under Wapol was either exiled from the country or killed. Doctors who gave in were called the Isshi-20. There were almost no doctors in the kingdom, anyone who was sick or dying had to beg at Wapol's feet. However, many Drum citizens refused to sell their souls to their king and their respect for Wapol fell.

Survivors
However there were two doctors left after the hunt who evaded Wapol's army. Those people are Doctors Hiruluk and Kureha. Hiruluk was not a real doctor and had no medical license and he was known to burst into a sick person's house and would give the wrong type of medicine that would either kill the person or have them go fall victim to a weird side-effect, which earned him the nickname "Quack Doctor". Hiruluk was the one who Tony Tony Chopper wounded in the snowfields.