That part about the evil fairy is definitely a flag lol, although I wouldn't put it past the author to make an evil fairy confrontation scene have something to do with the romance :P
"Being by your side is more than enough for me"
Given the context of the situation (that the duke is healed by Karina), the duke is technically just saying the truth sjjsjsjdjjsjjdjds
Yuuri gives me shigeo vibes somehow
Edit: oh wait- I didn't mean- just- sjjsjjdjjdjjsjdjsjdjdjdj
(I had made this comment before reading the other comments on this page lmao. I'm just flustered here because Shigeo from MP100 is heterosexual and I didn't mean to sound ignorant lol)