The Start Was Dangerous, and I Became the Mastermind Behind It

[Hot-blooded, decisive in killing, multiple female protagonists, system] My name is Mu Zehai, and I came to the fantasy world with an infinite upgrade system. It was a dead end at the beginning, and he was about to become a master. At the critical moment, the system appeared. This time he won't be stuck in a dead end, he will let women marvel at him! "Zehai, sister likes you." The charming woman whispered. "Um, let's talk about this later." A girl held a spear: "Mu Zehai, do you think I won't stab you to death?!" "Don't, don't be impulsive."