The Great Book of Magic: Achieve Invincibility

As the saying goes, times make heroes, because I lay down too much, just like that, I traveled through time. I pretended all the way, killed all the way, then got beaten, and then I was invincible again. The studio's first draft, don't read the introduction. Okay, I won't talk about it anymore. I'm going to kill monsters. If I don't upgrade, it will be the end. Wait, I seem to have forgotten, did the girl invite me to dinner? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.