You know I just realised something highschool dxd is kinda the perfect place to ascend to level 6 for toaru esper let's use a level 4 and Norse pantheon as an example
First you go to a pagan gods place like the
Aforementioned Norse pantheon then once your there you "borrow"(cough steal cough)there primordial rune(you can do it however you want) level up straight to level 5 and what about the magic rejection part well here the fun part
Now some context in toaru magic there is complicated you need to keep in mind the location, position, date, and the items near you if you wanna do a ritual, in dxd though not so much so let say in heaven the system of heaven have a little error(because of course an Ascension to a being of an angel of toaru the dying will of god will notice it(or if you wanna be extra spicy the toaru abrahamic Goethe one that actually omnipotent in his setting))all the(remaining) arcangel get in to a prayer but not Olin the position mention in the biblical record,and with the unanswered wish(prayer) of mankind going to the aforementioned esper going in the level up finishing the ritual,
representing the end of of aeon of Osiris and the beginning of the aeon of Horus
The self-realization and self-actualization of humanity, achieving a true awakening after the downfall of Christianity. Or in toaru esper case leveling up to level 6
