One of the special event weapons in the Japanese version of the game is a hammer called "Crazy D" that can heal your allies when used against them.

This is a special weapon designed in collaboration with Hirohiko Araki, the author of the manga "Jojo's Bizarre Adventure", and is a direct reference to Part 4's main protagonist, Josuke Higashikata, who possessed a Stand called "Crazy Diamond" that had great physical strength and speed, as well as the ability to heal people's injuries and repair broken objects.