Still, the material world’s boundaries had been sealed a long time ago. Theo might succeed in summoning a demon, but it wouldn’t be able to wield even 1% of its power.

However, that was more than enough.

Gods and demons, the transcendents of the Age of Mythology, were armed with a power that simply didn’t exist in this age. They had a spirituality that was several times higher than the present humanity. He had calculated that he could win if it was 5%.

- Do you want me to tell you before you eat that book?

When Theo had entered the Zero Library with Paragranum, she had smiled unpleasantly at him, who had chosen Hell Fire, and told him who the creator was.

- The magician who created Hell Fire was the demon king of fire, Fulito, who sent an avatar down to the material world. Hell Fire is a type of summoning spell that calls Fulito.

Once he had found out that Hell Fire was a variation of summoning magic, Theo had studied the magic formula with summoning in mind. The role of the magic circle was to invoke a summons through Hell Fire.

If so, all Theo had to do was to provide the catalyst and magic power that allowed it...