I'm an Alien (story arc)

I'm an Alien (ぼくは宇宙人) is the twentieth story arc in Diamond is Unbreakable.

It narrates Josuke and Okuyasu encounter with the self-styled alien Nu Mikitakaze Nshi, and Josuke's subsequent attempt at cheating at a game of cee-lo against Rohan with the help of his new alien friend.

Summary
Josuke and Okuyasu encounter Mikitaka Hazekura, who proclaims to be a bicentenarian extraterrestrial while displaying a Stand-like shapeshifting ability titled Earth Wind and Fire. Josuke befriends Mikitaka and exploits him by cheating money from Rohan in a game of dice by having Mikitaka become a die. Rohan discovers that Josuke is cheating but cannot deduce how while Mikataka has difficulties maintaining the masquerade.

Josuke and Mikitaka finally get away scot-free while Rohan's house begins to burn down because of a magnifying glass' refraction.

Chapters

 * 113 (378). 
 * 114 (379). 
 * 115 (380). 
 * 116 (381). 
 * 117 (382). 
 * 118 (383). 

Volumes

 * 12 (40). 
 * 13 (41). 

Anime Episodes

 * 27 (101). 
 * 28 (102).