I love this manga! But I don't like the other couple! I've also read the two other related mangas and I am more of a sure that the glasses guy is aweful! He raised this kid just as his "best weapon" and he made him uncapable of doing things out of his order! He made him chose a side in a war that wasn't his! As a half human half beast he shouldn't be forced to choose a side. It's a toxic relationship where this toxic uke should have raised this child as his own but he used him as a tool. The seme became someone who finding his own brother just said thing like "Who cares". Even the seme from the other couple whose familly was killed by beasts spared the life of the beast's children but this older brother reported him as not fallowing the orders... ;(
Musebinake, Junjou