I Sent It Once at the Beginning, but I Became the Savior

[Superpower + Campus Ranking + System + Experience + Decisiveness] After an accident, Liang Min came to another world. He found that he was now among the weakest in the school. He smiled crookedly at this question. "It doesn't matter, I will take action." "The tuba is gone, just keep practicing." The system taught him his first lesson. On the day of the time travel, when Liang Min could control his body, he found himself falling in the air. "What's going on?" [Nirvana talent has been obtained] [Effect: Activates when the host is about to die. Liang Min: "Activate on the verge of death?!!" He literally came into this world and was told to save it. … After a while, the placement test ends. All the students looked at this D-level person with puzzled faces. Student A: "How did he get into our head class with a grade D grade?" Classmate B: "Shadow! Shady! He must have gone through the back door!" Classmate C: "Does he want to pretend to be a pig and eat the tiger?" But Liang Min was thinking: The system is unreliable, so we have to rely on ourselves!