WTB future apocalypse spinoff lmfao
You could totally write it in having the MC acquire a time travel power and have it mutate with Evelyns power putting the MC in a coma one night for a few weeks in the present, having him wake up lost in that apocalypse world fighting for survival forced to learn to fight and survive real fast, eventually meeting older Moonsong and Co, helping them destroy his older self and once thats done waking up from his coma with a new found strength and skills like knowing how to fight and use all his abilities. Make him battle-hardened where he's now more mature and no longer needs years of training to join the Sisterhood.