kinda, i think the uke is their uncle
or maybe he's just their mom's friend, i honestly can't remember at all
nevermind, he was just a friend
His sister married a guy who had children she died and the uke got custody
The dad left his old wife
He left the kids, those two would have been sent to a Foster care
The mom probably wants to use them for money since she didn't get full custody of them ( did you read the beginning.)
Like fully deaply take it in
Inhale this manga
It gives respect to the authors
So not related?
No
they are not blood related
are they all related?