[No harem, no instant invincibility, grows stronger over time, no System, supernatural martial arts, academy setting]
An alternate plane merged with reality, making the world grow larger. Monsters escaped from the Demon Realm and wreaked havoc across the world.
Then the Sacred Firmament appeared out of nowhere. People began awakening supernatural abilities and fighting the monsters, eventually dividing the Demon Realm into one hundred zones and thirteen forbidden territories.
Before he could awaken, Lin Teng was badly injured and knocked unconscious by the lackeys of rich second-generation heir Song Fei, then dumped in the Demon Realm of Zone Nine. At the brink of death, a strange one-eyed monster snatched him away for some kind of ritual. He unexpectedly obtained a mysterious forbidden artifact, a long saber, and awakened a spatial ability!
And so, a terrifying spatial maniac burst onto the scene. The show was about to begin!
I haven't eaten any fine grains, so I'll just make do with the coarse chaff.