Volume 2 continues the weird chapter merging by the publisher.
I have no idea if this is an accurate representation of how the chapters were originally serialized, but this is how I would split them up (continued from my comment on the previous volume):
pg 003~066 - Chapter 1 (part 5)
pg 067~097 - Chapter 1 (part 6)
pg 098~138 - Chapter 2 (part 1)
pg 139~194 - Chapter 2 (part 2)
pg 195~197 - Omake
Here's the raw missing omake pages from this volume, for anybody who is curious about them, btw: