Responses
What you read is the final chapter of this volume. It just hasn't been scanlated yet, be patient.
There is no extra content for Hirano and Kagiura yet other than the short chapters they get at the end of volumes. Just be a little patient and you'll see it. This volume is not completely scanlated yet.
No, the author did not release a manga just for them. They have a single short chapter at the end of the volume. The scanlators will release it soon, so be patient.

The devil got the best of me last time and I uncontrollably read some raws...and it wasn’t like this it was about hirano senpai and his roommate?!any idea where that is?!