I do really like this manga, but dont know why from right after she turn 15yo for some reason i had feels Katarina makes me resembling with Vivio from Mahou shoujo Nanoha
@humbleoverlord
Because in that setting, the rival character makes the protagonist's life hell for god knows how many years and sometimes even tries to outright kill her.
I have been having a blast reading this. Probably because it shattered my expectations completely.
It has been very heartwarming and hilarious, yet the story progresses a little too fast for my liking. Wish there was more attention to the magic system.