Volume 2: Versus!

After Luefy learned that Buggy, the clown pirate, has a Grand Line map, he decided to fight and get the map from Buggy. Zoro defeats Buggy's chief of staff. It's now time for Luefy to fight Buggy.
Buggy has eaten an "evil fruit," too. He is able to separate his body into pieces! Buggy used to be Shank's friend, also.