The Core Assimilator: Overpowered by Science (A Fantasy Isekai LitRPG)

By: Royce, Thalen

In a world where magic is a blunt instrument, physics is the ultimate weapon.
Eight-year-old Caelum was never supposed to survive. Trapped in a high-level dungeon and cursed with two diametrically opposed magical affinities-Light and Dark-his body was a ticking time bomb destined to violently explode.
But when Caelum's mortal soul fades, the mind of a university science student from Earth takes his place.
Faced with a lethal magical overload, the new Caelum doesn't panic. He applies the absolute laws of thermodynamics. By perfectly balancing his volatile mana, he accidentally unlocks a terrifying, rule-breaking system ability: The Core Assimilator. He doesn't just defeat dungeons; he consumes their cores to permanently steal their raw elemental power.
Now, escaping the dungeon is the easy part. Forced to enroll in the elite Aethelgard Academy, Caelum must masquerade as a weak, clumsy utility mage to hide his massive, rapidly expanding power from arrogant nobles, ruthless combat professors, and hidden terrorists.
But when a massive, world-ending dimensional tear known as the Super-Rift begins consuming the kingdom, Caelum realizes that traditional magic is only feeding the apocalypse. The only way to collapse a magical vacuum is with a perfectly calculated, localized singularity.
To save his new world, an eight-year-old boy must secretly devour enough dungeons to become a living weapon. If he makes a single mathematical error, the void will consume everything. If he succeeds, the kingdom he saved might just execute him out of pure terror.
Magic has its limits. Science does not.
This story seamlessly blends hard Earth physics with deep LitRPG progression mechanics, base-building, and tactical magic academy combat. No harem.

• Format: Paperback
• Language: English
• ISBN: B0H2Z1HMXX
• ISBN13: 9798198406773
• Release Date: May 2026
• Publisher: Independently Published
• Length: 314 Pages
• Weight: 0.93 lbs.
• Dimensions: 0.7" x 6.0" x 9.0"