I hate the way Yamai acts as if Tadano doesn't even deserve to be Komi's friend. TO add to that fact, she's also being such a yandere (not a good one) to Komi. Kidnapping Tadano itself made it clear that Yamai herself has to be locked up int he prison for everyone's good.
This chapter is so satisfying because after all the annoying rambling Yamai said saying that she herself is more suitable to be Komi's friends compared to Tadano, Komi simply said "I will decide my friends myself." Leaving Yamai shocked and cry all by herself after both Komi and Tadano have left together. (lol Najimi is still there)
Yamai deserves the treatment she got in this chapter!