Shinou and Maruta halfbrothers huh? Totally did not expect that darn I shipped them! XD Anyhow that was an disappointing ending tbh but expectable how sudden it stopped. At least I was expecting some out-of-character action of Yuuri sudden deceleration of love for wolfie, we finally would have a marriage, kiss, more kids.. Kidding tho but that would be hilarious!!
Nah I didn’t a expected wedding or something like that, maybe that could happen in an special chapter or something, but not in this one (and I don’t really think we’re going to see that, it seems they don’t want to show that yet). What I was expecting was they said something about Conrart, he didn’t went back and to hell with them for that! I also want them to solve that in the gaiden, it’s the least I’m expecting from the manga plot…
And yes, Shinou and Daikenja are realted, you can read the hints in gaiden 4. Shinou’s father had a harem so Shinou has a looot of siblings xD He also hated his father was so engaged into the flesh pleasures, so he’s not even close to a womanizer, even if he’s super popular. Then he ended up with Rufus and it’s hinted he got serious with her and even had a child with her. It was the Daikenja who paired them up.