I don't know if the links still work but here i just found it on some random site (you need to make an account to see the link) https://www.yaoiotaku.com/forums/topic/52943-futari-no-musuko-ni-nerawarete-imasu-vol03amp04-128174-kamon-saeko-jp/
These are volume 3 and 4 btw
I don't know if the links still work but here i just found it on some random site (you need to make an account to see the link)
https://www.yaoiotaku.com/forums/topic/52943-futari-no-musuko-ni-nerawarete-imasu-vol03amp04-128174-kamon-saeko-jp/