My Buddy Hasn't Even Graduated, and You've Already Become a God of Killing

[Plot-driven + not invincible from the start + steady power progression + character growth + urban supernatural abilities + high-martial world + fiery youth + a slow start + not for readers who like fast-paced novels] Hundreds of years ago, the gods were constantly at war with one another. Spiritual energy leaked out, flinging open the Gates of the Void and letting countless unknown creatures invade human civilization. Ordinary young man Ye Tian transmigrates into this world, reborn and determined to do something big. But then he unexpectedly contracts a serious illness. At death's door, he obtains the [Hunting System]. To stay alive, Ye Tian drops out of school because of his illness. His teachers and classmates all feel sorry for him, and his close friend cries her eyes out. But... One day, his teacher and friends notice that something seems a little off. Classmates: "I thought we were close, but you're playing mind games with us?" Teacher: "I asked you to share your travel photos, and you shared your kill count?" Friend Zhang Biao: "I've spent my whole life walking on thin ice." As Ye Tian grows stronger, the things he does become ever more earth-shattering. Until one day, Ye Tian, the beast-slaying machine, makes the front page. From then on, the class group chat goes wild. "No way, man, we haven't even graduated, and you've already become a god of death?" "Okay, okay, so you're really going to take the competition this far?" "No, man, nobody goes this hard, even by our standards." Friend Zhang Biao: "I'm still spending my whole life walking on thin ice~"