File:Danshi Koukousei no Nichijou.jpg

Description
"日常×男子高校生の日常", by から (posted on Pixiv on 2011-04-31). (Danbooru archive link)

Fan art by Kara depicting Trio Sucharaka from Nichijou first OP, but with the characters from Danshi Koukousei no Nichijou. From left to right: Hidenori, Yoshitake, and Tadakuni.