Start with Attack on Titan

Well, I traveled through time, it's nothing. I've traveled to the world of Attack on Titan, so it's nothing. I said I was very calm, I had become a giant, okay, it was nothing. I'm still calm. Is it an ordinary giant, 3M tall or ugly? It doesn't matter. I'm very calm. Ha? You ask me why I am calm, because I have a system. Didn't the system say, wait, what did the system just say? System: If you want to upgrade, please start by eating people... Wang Dong expressed that he was not calm anymore... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.