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

The next day, I told the Kings about everything. From Angela's reaching master level and how she destroyed a city with over a million populations with just a few magic.

The Kings were happy and shocked to hear that. A city with more than a million people, with a lot of master level mages living there, killed by a single girl. She's scarier than I am to these Kings now.

"Roy, I'd like to say that now we have someone as strong as Angela that you are free to take a risk from now on and make a move on your own to the base of the cult whenever you want. Unfortunately, I can't. In the end, Angela is still your lover and the one she's following is you and not the alliance. And now I understand that even if we try to stop you, it would be nearly impossible. So next time you move on your own, at least make sure that Angela won't be busy and she can move whenever we called her," Albert said.

On Our Way to Meet the Kaiser Whale