In this world, a boy named Reign was born. He thinks himself just a tiny bit better than others. With his abilities, he could be considered an extreme extraordinarily genius in magic and intellect. Well, he doesn't know it but, his mana pool is unnaturally vast. It's, unlimited, there is no end to it. And no one knows.

Due to early education and training, being already gifted, he becomes proficient at magic with the extremely prodigal skill for it, becoming a Child Magician.

Unfortunately, as a result of this, he is destined to live a life full of pain and suffering.

He will cry, and he will despair.