This NPC Is Toxic

In a world where spiritual energy is about to revive, Yuluo appears with a space-time game System. Luo Fan, heir to an ancient martial arts clan hidden in a bustling city, has reached the ninth level of the acquired realm. Rescued by Yuluo by chance, he can no longer make a breakthrough. And you never know whether tomorrow or an accident will come first... (Dual protagonists, no female lead, leveling story, no outline, deep pit ahead, don't enter lightly. This isn't meant to discourage you, just a reminder to readers to think carefully, then carefully again, and once more.)