"Crazy Kanzen na Otona" (Crazy 完全な大人) is the 21st major single by the Japanese female idol group Cute, released in Japan on April 3, 2013.

[2] The title song was first performed live at a series of concerts called Hello!

Project Haru no Dai Kansha Hinamatsuri Festival 2013,[3] held on March 2 and 3, 2013.

The limited editions A, B, and C include a DVD.

[2] All the limited editions are shipped sealed and include a serial-numbered entry card for the lottery to win a ticket to one of the single's launch events.