Thanks a lot for the translation, I'm loving this.
I wonder how that best friend situation played out when she didn't know her girlfriend, and how it will play out now, he did not seem happy
Sempai was not at fault since she didn't know they had a relationship, and now that she decided to tease them she may as well be the push they need to go further
I believe some very high levels of bullying exist, especially in a place where complaining or telling others about it its seen as shameful and bothersome