I'm not sure at all but I was also surprised by that but I think that the story in this volume happened before their separation :/ ?
And what didn't you understand in chapter 51 ?
I dont understand why in chap 51 there are so many new characters .. Is there any chap that show how Norio and Kunimasa come back to each other?
This manga is like that. Have main story (Norio and Kunimasa) then have this kinda break time from the main story with a lot of spin off stories of other couples. Seems like Volume 10 will be about these other couples as well. Probably will back to the main story in volume 11.
The main couple just come back to each other? Where is that part? And i dont understand anything from chapter 51. Can someone explain plz?