Death is the end of a journey, but also the start of a new one. He has given a chance to be alive again... to be his own self without worrying about his past. And he's not going to waste it. (Inspiration to everyone)
Saito is a Nephilim a child of a Angel and a Demon, orphaned he hunts demons to stay hidden from the Demon King but all he wants is someone to love him and not fear or hate him or even try and kill him. Louise is a Zero who wants to summon a powerful Familiar unlike any ever summoned before well they might both be getting there wishes soon. This Party just got Crazy Lets rock baby!