Black Summoner, Vol. 2 (manga)

"Well, that's because we have no doubt that we can beat you " Ever since arriving in a new world, in possession of rare and powerful abilities that he acquired by bartering away his memories, Kelvin has steadily continued building up his party by gathering powerful allies one after another. Now, the threat of a demon--a race only told of in legends and stories past--looms over Parth, the City of Peace. As the most powerful party in the area, Kelvin and his allies are tasked with the investigation and handling of this new threat--only to walk into a life-and-death fight with a Rank S opponent Our snarky, fun-loving battle junkie faces his most formidable foe yet...but luckily, he's got some of the most formidable allies around to combat them The exhilarating battle fantasy journey continues as this black-clad warrior and his companions continue to leave their mark upon the world