We're glad to hear you enjoyed the game!
You can romance: Eleanor, Victor, Amelie, Khai, Briwala, Lena, Marius, Seralli, Yda, and Evelyn. There will be more that will be added at a later date, but those are the ones we have right now, ah but Amelie's has just been added on the latest version on patreon se it will take a little bit to get here.
Khai's twin sister eventually enters the story, and you can meet another Nazurian based on a decision you make later in the game.