Dr. Dalton Wyatt, a world-renowned scientist and inventor, is transmigrated into the body of a high school student named Dalton Wyatt, who committed suicide due to unfortunate circumstances and a complicated life.

The new world is completely different yet similar to Dr. Wyatt's homeworld, Earth. Unlike the peaceful Earth, where humans fight other humans, this new world is plagued by dungeons and monsters. People here fight monsters for the survival of humanity.

Mortal humans are not strong enough to fight these mythical and legendary creatures. Thankfully, some blessed humans can actively control their souls to manifest soul power and become Card Apprentices, fighting for humanity's chance at survival.

Card Apprentices are people who contract Grimoires and use various powerful yet resourceful cards to fight off monsters and conquer dungeons. Grimoires provide Card Apprentices with abilities like Card Creation and Card Fusion. Most importantly, they allow Card Apprentices to display their full potential in a card fight.

Even though this world has the concept of science, it is not focused on electronics and industrialization like Earth. Here, the world has cards for every little thing, eliminating the need for electronics.

This new world is highly focused around Grimoire abilities, Card Creation and Card Fusion. Coming to a world where money could literally buy him strength, Dr. Wyatt had to earn money for his survival. But thanks to his otherworldly information and knowledge, Card Creation comes easily to Dr. Wyatt compared to other Card Apprentices.

Dr. Wyatt creates and sells various perfect, powerful, and resourceful cards to earn money and grow stronger step by step in this monster-ridden world for his survival.
... 

“What did you say? Making good cards is hard? Bah! Card making couldn’t be easier!”

“Trash materials! Let me teach you that there are no trash materials, only trash card makers.”

[Bloody Veins - G rank, Mortal grade] 
[Nylon Rope G rank, Mortal grade] 
[White Core - G rank, Mortal grade] 

Card creation… complete! 

[ Card Name - Bloody Rope 
Card Type - Item card 
Card Rank - E rank, Common grade 
Card Rating - 3 stars 
Card Durability - (100/100) 
Card Effect - Bloody rope can be used to bind opponents. If bound on open wounds additional effects of paralysis and blood drain activates unconditionally.] 

“Oh my God! You used a G-rank Mortal-grade core, but how did you create an E-rank Common-grade card with a 3-star rating and full durability? This is a dream! Yes, I am dreaming! I didn't wake up today. I'm still in my bed, dreaming!”

Location: Myriad Realms, Dark Realm, Seven Prince of Hell Territory, Pandemonium City, Center of Pandemonium Volcano, Millennium Volcano Heart Natural Array


"But how?" Mommon asked in disbelief. His disbelief wasn't directed toward my confirmation of the obvious, but toward the fact that his entire city was sitting on an explosive and he didn't have an inkling.


"That's not the question we should be asking…" I shook my head in dismay. "We should be asking what now."


Mommon's greed to capture powerful demonic beasts by using the Millennium Volcano Heart was what gave Belphegor an opportunity to place an explosion-type True Relic underneath the city without being detected for so long.


Chapter 3230 - Taking The City Hostage