asuya

Roy died during a war against the Evil God Cult, but somehow, he returned back in time to 30 years in the past where he was just a boy who awaken his summoning magic. 
Just a few days before his death, he became the only Aura user in a world of magic. 
Using his knowledge and experience, he will become an Aura user again, faster than his previous life. 
Accompanied with a shape-shifting black slime, he will make sure to protect everyone he cares about and win against the Evil God Cult.

The Only Aura User In Magic World

Kill more enemies so that the master can reach master level at the end of his fight.

That's what all four familiars of Roy agreed before the fight.

"Hey. Let's kill a lot of monsters so that Roy can reach master level and add another monster as his familiar."

The one who suggested that idea was Victoria. Roy's first familiar. A Black Slime who was an Aura user in her past life. And in her past life before that, she was an ordinary woman from another world.

She might be teasing Roy a lot with her various knowledge from her original world. But she's someone who has been with him the longest.

She knows Roy's desire to destroy the cult. And she's trying to help him in any way she can.

And one way to do it is for her to kill more enemies. Because that's how a summoner can reach the next level. By letting their familiar to kill enemies.

15 Hours Battle