You Clean up the House and Let Me Save You When the Disaster Comes?

[No system + invincible + decisive killing + cold-blooded + never forgive] In your last life, you ignored the feelings of your fellow students and turned against you in the face of battle. In this life, don't blame me for being cruel. Cleaning the portal? Haha, you don't want this kind of rubbish sect. The world is big. I have turned the world upside down. What, do you regret it? Joke. But how could I look back?