週刊ヤングサンデー
is a Japanese manga series written and illustrated by Inio Asano. It was serialized in Shogakukan's "Weekly Young Sunday" between 2007 and 2008 and later in "Weekly Big Comic Spirits" from 2008 to 2013, its chapters were collected in thirteen "tankōbon" volumes. In North America, it was licensed for English release by Viz Media.