DogLickerGods
Hey author, maybe you can have the MC speak his inner voice saying "Sigh... The multiverse is a beautiful and cruel place. Any story made up by men in any universe will exists. Every world in existence due to the infinite possibilities of the multiverse will be a fiction in some world. Even me, at this point is a fiction in some other universe" This will relax everyone since... its true lol... who knows, this earth could be a novel
I will not be Surprised if Issei got killed early and the world has not been collapse because there are other Protagonists around... Knowing that Basara there and he is a Cool Guy too... I hope that Basara will not become a Regressor and become friends with Tian... Imagine when Tian got all Basara's Harem and Basara is just chilling around