MTL - Demon Slayer Starts From the Proficiency Panel - Chapter 160 [160] Ning Xiu's holy vision ability, showing

It begins on the mountain.

With the glint of a knife, a flash of steel in the hands of a sworn brother. A betrayal.

Stabbed and pushed down the mountain, Zi Chen lied within the red-stained snow, left to die.

This is where it begins; he is given life by lightning,
baptized by thunder.

Those who had once betrayed him should all suffer in his cruel revenge.

- Description from Novelupdates

WARNING: The MC is NOT a demon! For an explanation of the title, please see the post we made specifically addressing this matter.

Ling Xiao was an orphan fighting for survival in a dog eat dog world. There were some who had the power to enjoy a life of comfort, unconcerned with worldly matters, while most struggled to survive. He was of the second kind.

When he celebrated his sixth birthday, his father left him to the wolves with only a token to defend himself. He struggled to earn a living, scrambling together whatever scraps he could gather; fighting with the dogs for food and fighting with the homeless for shelter.

But that all changed on a fortuitous day, when a demon invaded his home. In a world of deception and plotting, one tasked with seeking revenge for the man who gave him a second lease on life, how would Ling Xiao fare?

- Description from Novelupdates

On a certain day, dungeons from another dimension suddenly appeared on Earth and monsters started to invade human civilization.

Humans were forced to form hunting parties to conquer dungeons.

Hunters can be separated into different jobs, including Knights, Warriors, Archers, Magicians, Assassins, and Supporters.

Each job had its own responsibility when they fought together.

When Lu Benwei was transmigrated to this world, he got the weakest job and became a Supporter.

Fortunately, he received the One-click Support System.

Resource Support: Click to receive 10x experience, 10x item drop, 10x money drop.

Walk Through Wall Support: Click to increase speed and unlock the ability to walk through walls. There’s no place that you can’t go in the dungeons.

X-Ray Vision Support: Click to clear the fog and locate every hidden chest and mission.

Health Lock Support: Click to lock your health. You’ll be immune to any damage for a set amount of time.

Storage Support: Click to expand your storage. You can store as many items, pets, and runes as you want.

“He can walk through walls, has X-ray vision, and invincibility? You call that a support system? He’s basically hacking!”

“I’m not hacking!” Lu Benwei replied.

Within the virtual world of “Avalon Online”, Finn, or otherwise known as “Echo” within the game, was one of its greatest players. After logging off from a long session, however, he notices something awry outside of his apartment.The streets were flooded with chaos, screams echo through the night, and hell is loot loose. Monsters from Avalon Online are running through the streets, wrecking havoc. In the midst of this hellish awakening, Finn is greeted with the one gift bestowed to humanity in this dark hour:[...Assessing life experience…][Assessment Complete][Name: Finn Thorne][Age: 20][Designated Class: Assassin][Starting Level: 5][A [Legacy System] has been bestowed to you for your accomplishments within Avalon.][Assimilation System Awakened.]In this twisted turn, as the world as it was once known is gone with the arrival of magic and monsters, the remnants of humanity must level up if they wish to survive.Finn is left in this dark, hopeless apocalypse, using his own experience from Avalon Online to best survive what seems to be an impossible task.