Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 522 - : 521

Qin Yichen returned to his youth with his memories of more than 10,000 years. Superb mental strength, advanced elixir formula, advanced martial arts.

- Description from xbiquge

As an underworld boss who has been in the ladder all the year round, You Feng specially uses various non-mainstream underworld decks to climb to the duel king of the ladder in one go.

Also known as a cancer.

I didn’t expect to cross into the mixed world of DM, GX and 5DS!

You Feng defeated the major powerhouses with absolute capital, seized their cards, and then began to research and combine all kinds of fancy tumor card groups.

The most important thing is that such a tumor, the guardian spirit is still the creator god of light! !

“Is this the God of Creation of Light? What!! It turned out to be You Feng’s?” Muto Game.

“You call the cancer a **** god?” Haima Lairen’s mouth twitched.

“I never take the initiative to pull out screws! Except for facing You Feng! It’s too poisonous.” Do not move Yu Xing.

“What kind of dark dueling elf, how can You Feng be scary?” Youcheng Shidai.

- Description from novelbuddy

You shall become king—

Ruling over all “serpents” in the world…

Become the man who bears the brunt of dragonkind’s fear and hatred.

A modern era when humanity is threatened by attacks from giant dragons flying from beyond the sky.

Controlling “leviathans”—serpentine spiritual beings created through magic—humanity is locked in a protracted war of resistance against the dragons.

Fortunately, there exist witches known as “magi”—battle maidens of salvation who formed covenants with “serpents” in order to combat dragons.

Nicknamed Hal, the young man called Haruga Haruomi makes his living through facilitating the covenants of these girls.

At the (partially coercive) request of his childhood friend Asya, one of Europe’s top witches, Hal returns to Tokyo New Town after an absence of three years.

Accompanied by the beautiful Asya whose appearance rivaled a fairy’s, Hal is running all over the place to secure his base of operations and taking care of matters related to school transfer when the elite dragon Soth suddenly attacks—!?

Life has been breathed into a brand new myth between dragons and dragonslayers.

A grand opening to the “birth” of a top-class battle epic!

The king of assassins was reborn, mastering both alchemy and poison. Sitting inside the space, there was a ghost that loved crying.