Summoner Reincarnate

After a life changing experience in death Jason meets with "The Coolest God" and is allowed to return to the realm of the living due to his benevolence. And he heroically accepted the challenge to fight against the demon lord despite the consequences that come with his reincarnation. But most importantly he's to have fun. I mean why else would I the magnificent me send him there. Against- I mean in accordance to his wishes. Don't roll your eyes I know him better than he does himself get over it.