Seated at her desk—which had since been transformed into a small-scale workstation—Avia carefully controlled the miniature wizard hand she had conjured, slowly embedding small but intricately engraved magical components into a metallic book on the table.0

Piece by piece, she filled the carved slots on the outer layer of the metallic book, which was designed to house these magical circuits. When the final component clicked seamlessly into place, Avia dispelled the conjured hand and exhaled deeply.0

Lifting the somewhat hefty tome from the table, she channeled a modest amount of mana into the slot designated for a power source, a high-purity mana crystal.0

The entire tome vibrated slightly, emitting a soft, rhythmic flow of light through the gaps in its metallic surface.0

Though imperceptible to the naked eye, the flow of mana encircling the tome became vividly clear through Avia's analysis spell. She had succeeded in using external magical circuits to replace the mana channels that were standard to a magician's spellcasting, greatly mitigating the risks of overheating and instability caused by mana surges. As a result, the tome's capacity for mana had significantly increased.0

The only remaining issue was the substantial heat and instability caused by the high concentration of mana near the core. A robust core capable of withstanding immense pressure would be essential to completing this device.0

Unfortunately, neither...0