there was that time where oreki and others need to find chitanda because she was missing, and she was supposed to perform iirc. oreki found out where she was and meet her alone. chitanda shares that she's now free from being a successor to her family (I think, I'm a bit blurry here), and now she doesn't know what to do. and that's the end of the volume
edit: just realized this is actually the most recent volume on baka-tsuki, though they also list that there are currently the 7th volume which I haven't read