God-Level Killer

When the otaku Wang Yue was playing League of Legends, he had just released the Killing Sword and Killing Book, and suddenly his vision went dark. When he woke up, a middle-aged man said to him: "My name is Kotomine Kirei, and you will be my apprentice from now on. I will teach you to be the strongest agent." Ten years later... Wang Yue killed vampires and magicians by himself, and Tohsaka Rin asked his senior brother, "Are you a monster?" He shook his head, rolled up his sleeves, and saw a mark on each wrist, which was a sword and a book. "Although I didn't kill the devil's eye directly, if you give me enough heads, God will kill them for you." This book is a comprehensive novel, the protagonist is decisive in killing and does not like to accidentally enter This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.