She said it herself that society is too focused on romance and it would be nice to have some kind of aromantic representation. And it doesn't seem like she's interested with either of them anyways
The story kind of fell off when flower boy became subin. Not only was the story rushed, he also lost his charm when he turned stoic. I liked him more when he was a wide eyed plant, excited to photo synthesize
I really don't see the chemistry between the two side characters.