Ryoichi is from @koyuki-tan‘s “Peace Sign.”
Hairu
– I think she’d win them over with her cheerful disposition.
– they might think she’s good for the reserved Ui.
– However, I’m not sure how they’d feel about her heritage. They might get over it, as long as it is emphasized that Hairu is mostly human and does not eat people.
Ryoichi
– poor boy is gonna have a harder time. They’ll be thrilled with him at first, because Koharu clearly loves him and he treats her well.
– But when they realize he’s a full ghoul, their fears start. Mostly for Koharu.
– It might take an Uihai intervention in which they explain that they accept Ryoichi before the parents begin to settle down.