
For the Kyle and liz engagement i have not read it
And
Lmao why tho? Anw it hasnt been confirmed yet if Aira end up with Erhart (there's two candidate Erhart and Yuri) if It's about age, yea i know Aria's age is 18 and probly both guy in their early 20 (It's a hunch since both of them aint that old looking at all) but anw maybe the romance will progressing when Aria in her early 20s so yea ¯_(ツ)_/¯
But IF It's for other reason— dont be too hard on Aria. She's just a normal child and suddenly get transmigrated at some weird world, and only get the prince to rely on. She change for the better tho.

Yuri??? He’s also a candidate? Ew. That might be even worse somehow. And yes, it’s about age. She must be 18 currently in the LN because she’s still 16 at the point I’m at in the manga. Not sure about Yuri’s or Erhart’s actual ages, but they seem to be more mid 20s, at the very least, in the manga. Albert and Johan are childhood friends, so probably similar in ages, and both seem to be older than Sei, who’s 20, and Erhart is older than Albert. Plus, there’s the difference in maturity level as well. Gross all around, imo. They paired Liz (and Sei) with someone age appropriate, so it’s strange that the author would go that way with Aira.
Spoilers…
I was reading different wiki pages related to this series, and I found out that Prince Kyle and Liz’s engagement was annulled. She’s now engaged to Kyle’s brother, but the reason for the annulment wasn’t stated. Has it been stated in the LN??? I feel like it might be because of Aira. Did Prince Kyle fall in love with her?
Edit: I saw comments saying Aira might end up with Erhart (Albert’s brother)???? I’m going to throw up. I’ll be so disgusted if the author goes that route. I’m pissed just thinking about it.