
I'm confused did uke's sister really had romantic relationship with seme's father?? And did seme's mother knew about uke that he is her brother?? And how uke's parents died?? The story was good but it have been nice if this facts were more clearer.. And ya there was a couple ring with seme's father.. Who was the person he was going to give it??

I don't think the uke's sister is in a romantic relationship with the seme's father. It was mentioned that none of the rings fit his father's wedding ring so it wasn't for him. Maybe it was for the siblings since it was the uke's birthday.
As far as I can remember, it was mentioned that the seme's parents sponsored quite a lot of students so i guess his mom knew that the uke is the brother of that girl who died with her husband.
I don't really know about the other questions anymore but i hope i cleared out some stuff.
What?? Deposited an embryo???? What what what???
It's from like far up in the series like ep 1- 20 or smth
Bro I've been watching too much anime I meant ch