Dream Architect

Is this reality or a dream? I really don't know. An extremely ordinary boy, a magical jade pendant, a beautiful girl, and a group of like-minded friends. That's not right, why is it just me in the end, where is my friend, and where is my girlfriend. Oh, I know, he was killed by me myself. Who am I and why do I want to kill them all? Am I still in a dream? It must be. I can't help it, who made me so smart? It seems that since her death, I don't care about anything. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.