Rebirth: Third-Rate Killer

An unknown third-rate killer, he was killed by his target during a mission, and he time-traveled into the body of a high school student who "died abnormally". He is determined to squeeze into the ranks of second-rate killers no matter what in this life, and the road to his goal seems a bit bumpy, so what should he do? First of all, who should he assassinate when he wants to assassinate someone? It doesn't matter, kill whoever you see This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.