Because she's engaged. Not that she can say it out loud though. =w=.
Can Mikazuki come and join us this time ?I'm going to have a single-only drinking party with Mochizuki in the last Saturday of this monthit’s too badMochizuki(Kisaragi) Why would you even think of getting that kind of license ?Yes!
… oh, but sorry, I have an appointment to renew my boat driving license on that day…