Undeniably, the reason Reiger could master so much Magic is all because of it———[Omnipotent One].
The memory magic that allows learning others' Magic, is truly the only magic belonging solely to Reiger.
All of his Magic is reproduced through [Omnipotent One].
The only magic he truly possesses is just [Omnipotent One].
Therefore, after returning to Earth Mistake World, Reiger has often wondered if he should awaken a second or even a third Magic.
That's why, when encountering that mysterious magician, Reiger proposed receiving a magic book as a reward.
Because his magic slot only has one, no way to awaken a second or third Magic through normal means, right?
To learn new Divine Blessing Magic, Reiger could only increase the number of slots through the magic book and thus force the awakening of Magic.
Originally, Reiger wanted to earn money himself to buy one, but magic books are not so easy to obtain.