Miku wants a bf? Hmm... I don't think that's gonna be a wasted detail given that she's a named character. Kaoruko surprised them all letting them know she's also hungry for romance.
That group chat is a godsend for these friends separated by the divisions created by their schools. It was a little sad seeing them have to spend summer break separately, but with the power of modern messaging apps they can easily cook up a plan to meet elsewhere when schedules line up.