material infusion is actually insanly useful for long term grinding high bonding. u can conbine 2 less efficient gifts(20xp per) into a student's desired one(60xp per), it adds up slowly
Ace: level 80 , focusing on skill levels , breakthrough eligma's , mission 15, and idk how long you play , global server , decent amount of affection level per students , 3000 cafe Me: level 61 , focusing on student gears , mission 18-1 , 4 of 5 star students (all didnt have second breakthough yet) , i play for 1 month , JP server , no pay to win , a less amount of affection level on students I didnt use much , high affection level students that I often use , just upgrade their skill levels if just needed only , sometimes random upgrading the other students who is yet to use , 3500 cafe