Mechazawa's tranceform - from "Cromartie High School"

Cromartie High School (?!!??????? Sakigake!! Kuromati K?k?), by Eiji Nonaka, is a Japanese comedy anime, based on Nonaka's popular comic. It follows the everyday life of Takashi Kamiyama and his odd classmates at Cromartie High School, an infamous school for delinquents. Both the anime and manga have been released in North America by ADV Films and ADV Manga respectively. The manga won the 2002 Kodansha Manga Award for sh?nen. en.wikipedia.org