Scumbag Loser (最底辺の男, Saiteihen no Otoko) is a Seinen manga by Mikoto Yamaguchi. It was pre-published between November 2011 and December 2012 in the magazine Gangan Joker of the publisher Square Enix and was compiled in three volumes of May 2012 at February 2013.
Murai Masahiko (16) has a fetish for the smell lingering around a scumbag in his class. One day, a beautiful girl named Mizusawa Haruka transfers into his class, but when they start dating he spills the truth: "Mizusawa Haruka died 5 years ago...." Who the hell is she!? What are her intentions!?