Again MC forgetting everything except sensei. Forgetting that she has a friend to talk about. If “sensei is her only reason to live” then she’s only a dumb brick that never looked behind her glasses.
All of you that are against the childhood friend, why? Because she acts moved by jealousy (not only that, at the beginning was only preoccupied, she changed later)? At least she’s the only one here that looks to help someone; Sensei still has in mind her first love, Aya as I said is a dumb brick and accepts a messy skin relationship.
Enjoy your MC if you support her self-destructive love so much.