I just hope she actually uses her past life experiences and knowledge cuz whats the point of telling us that you're "the most in-demand math teacher" if you're not going to uses these math skills in this life 
I'm Everywhere.
BL Reincarnation: https://mangabuddy.com/manga-list/105170
BL Reincarnation: https://mangabuddy.com/manga-list/105170
