There’s a few missing pages. This link has the rest of them.
https://myreadingmanga.info/hasumi-hana-remnant-kemonohito-omegaverse-eng/15/
Is there a story about the two dad's?
more on the boys and a bit on the dad here http://www.mangago.me/read-manga/yakkai_na_bokura/
There’s some parts that are missing in ch 17
I just checked, I don’t see anything missing
There are I checked the raws still missing some
His brother’s friend and brother show up at the end of ch 17