One-Punch Man of the Immortal Realm, the Only One With Supernatural Powers in Reality

Li Xuan, a delivery driver, gets incredibly lucky and winds up in the world of cultivation. There, he unexpectedly discovers that his body is invincible. Back in the real world, his body returns to normal, but he brings the cultivation world's spells with him. And so, the cultivation world gains a one-punch superhero. Meanwhile, the real world gets an immortal who alone wields supernatural powers!