Super cute chapter... I only wish Ali would take on a more active role. She appears to be always alone except when Sheena spends time with her, and hasn't really found something she wants to do, did she ? I don't know if she really got over Seiran's death, or decided anything from it.
It's the same with Senpai... I wish I could just be happy for Mimi and Sheena, but the shadow looming over everyone else's life make it difficult to enjoy any of these chapters as anything but a tragedy.
Even if at least these few moments are happy. Except for the ending. Stupid adults, worrying about grades of students who won't make it to adulthood because of them. Go to a battlefield with the old crones and disappear already. Those girls could do so much without the constant threat of being sent to their death.