At 17, he made his first manga submission to Weekly Shōnen Jump, but it was considered by the editors to be too graphic for the magazine's format and was subsequently rejected.
Although Maruo is primarily recognized for his work as a manga artist, he has also created illustrations for concert posters, CD jackets, magazines, novels, and other media.
His book Shōjo Tsubaki (aka Mr. Arashi's Amazing Freak Show) was adapted into an animated film (Midori) by Hiroshi Harada with a soundtrack by J.A.
[1] The illustrations throughout several of his works show grotesquely dark imagery, strange sexual acts / rituals, as well as sexual-violence towards minors.
Maruo himself featured in a 1988 book on the subject with fellow artist Kazuichi Hanawa entitled Bloody Ukiyo-e (江戸昭和競作無惨絵英名二十八衆句), presenting their own contemporary works alongside the traditional prints of Yoshitoshi and Yoshiiku.
Composer John Zorn used Suehiro illustrations for the liner art of his band Naked City's albums.