Ah one of my favorite manga's back. Unfortunately, these chapters always feel too short. Looks like we're getting another perverted vampire in the squad.
@Desox
I think he was only a servant or something.
Likely trying to make or revive a Kingdom once more.
Aria likely has a partner in last (a girl as well) based on some speech and flashback on some chapter so I doubt author intention is even NTR not to mention it being a comedy.