Genkai! Oshikatsu Densetsu Yoshio

In Nanshu City, there are the "Four Kings of Nanshu," the baddest of bad boys. The strongest of the Four Kings, Yoshio Hitoshi, is actually a hard-core fan of the magical girl anime Merry Nature! By the way, his favorite girl is the cherry-red one called "Haruma." Yoshio just wants to live his otaku life in peace, but today, as usual, he gets tangled up with the other delinquents in town. This is a story of a delinquent who wants to be an otaku, and his life full of ups and downs!

(Source: Sunday Webry, translated)