When Wischtech threatened to invade the fiefs of Szaalanden, the Emperor dispatched fourteen youths. Of these, the Seven Heroes halted the invasion to herald a time of prosperity while the four Lances of Betrayal were supposedly defeated. Two decades later, the Lances of Betrayal have reappeared and formed a bandit militia near the frontier fief Gormbark. A man with the black sword and a scar over his left eye slays an entire troop of that militia. He is identified as a boy, Kóinzell, and becomes as much an object of fear as of hope even as his own past, motivations, and purpose are a mystery to those he meets in his travel. (Source: MU)

Übel Blatt was serialized in Young Gangan magazine until the 22nd, 2009 issue, after which it took a short hiatus and restarted in Big Gangan magazine in 2011. The series was published in English by Yen Press as 2-in-1 omnibus volumes from October 28, 2014, to December 24, 2019. The publisher also released the manga as 3-in-1 deluxe omnibus volumes. It was also published in Spanish by Norma Editorial from May 14, 2014, to October 29, 2021; in German by KAZÉ Manga since October 8, 2014, to June 4, 2020; and in Italian by J-POP from September 30, 2008, to October 23, 2019.