Rockman-san - Vol. 2 Ch. 21

[MangaDex]

 

[YoraeRasante]

It is because chapter 19 is set as No Volume but chapters 20 and 21 are Volume 2.
No Volume are usually those that did not get a volume for yet, so they are usually the newer ones.

 

[YoraeRasante]

Also...

I feel it too, you two. I feel it too.

 

[BladeZX]

That last page hits hard