Zongman Zhutian: Starting Contract Substitute Messenger

The protagonist traveled to Fuyuki City with the Key of All Souls and contracted with Killer Queen as a substitute. Killer Queen, who has strength A and speed B, can turn anything she touches into a bomb. The protagonist discovers that this power is far from reaching its limit. In order to survive in this world, the protagonist works in a convenience store to make money while secretly investigating clues to the Holy Grail War. He knew that only by finding more bonded spirits could he gain a firm foothold in this dangerous world. When the protagonist's nails grow wildly again, when Kira Yoshikage's obsession surges again, the protagonist smashes the wall with a punch: "I'm not that pervert! I want to use my own way to live as the strongest existence!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.