Traveling Through Another World: My Companion Spirit Weapon Is Sky Fire

(Semi-original + original world view + a bit of suture monster + time travel) In an accident, Chen Mu, Chen Yifan, Su Shu and Tao Xing were transported to a different world by a truck. A collapse disaster occurred in another world, and Chen Mu became Kevin, with the mission of saving the world. So, can the four protagonists solve Honkai and fulfill their responsibilities as "outsiders"?