Have literally no idea what you're on about. The romance is subtle enough/soft and doesn't have much effect on the action. If you're both part of the dragon race I think romantic thoughts are inevitable (this was in the novel) plus the further chapters show their relationship becoming closer (not in the novel which makes manwha actually better). Kivye and Hanbin are also not dramatically pushing their relationship and they only have soft undertones, it's a total slow burn. Kivye is not a jealous tsundere, read some more from that chapter she's not jealous of the relationship but more so frustrated/saddened by the fact she will have to leave her friends to reunite with the goddess after the mission. And whether those friends actually care when she leaves makes her moreso frustrated.
bruh what is going on season three started and suddenly theres a romance subplot between hanbin/kibier and artis/zephyr?????? it feels like the writer got completely switched out and now theyre erasing everything about the characters and their preestablished relations??? and the romance isnt even fucking good, they feel completely ooc! all of them! there was no hint of attraction between artis and zephyr until ch. 108 and kibier is suddenly relegated to a jealous tsundere whos in move with hanbin for no particular reason?? what the fuck is going on