MTL - I! The Villain Licks the Dog’s Father, Specializing In All Kinds of Protagonists - Chapter 63 Protagonist treatment! Charge horn! Stretch crack!  …

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?

Freshly turned eighteen, John Newman, a helpless nerd, suddenly gets video game abilities granted to him. A mysterious higher power, a secret Abyss of magic beneath the surface of the normal world, mages, martial artists, eroticism, tragedy and a harem of hot girls awaits.

There is nothing in the world that cannot be solved by a transaction, if there is, then make a pure (ang) clean (zang) transaction.

If you say it, you may not believe it. The people who have traded with me are all over the world.

Trading is a great cause that is beneficial to physical and mental health and that people cannot refuse!

- Description from novelbuddy

Year 2056, in a city in the Yuan Jiang Su Jin area. On top of a ruined, shattered six story residential apartment sits a teenager wearing a combat vest, militaristic trousers, and alloyed battle boots. On his back is a hexagonal shield and equipped is a blood-shadow battle knife. He sits there silently on the edge of the roof. At this time, the sparkling sky was shining and there was a refreshing breath within the air that blew towards him. However, there was only silence within the ruined, deserted city, with an occasional howl that makes your heart skip a beat.