Hello! Pri the writer, here! Thank you so much for the interest in our game! ☺️
As regards Hummingbird's Crown main story in itself, the game is already finished, since this story in particular only works with Lonan and Galvin as the love interests. We did plan to add an Invar route, at some point, that would have a similar concept but deviate from what happens in the common route from this game.
At the moment, though, it's hard to say if we'll ever release Invar's route. All the members of our team are from different countries and timezones, and all of us have our day jobs as well as other things going on. Maybe one day it'll be made! But for now it's uncertain.
Thank you for your sweet comment! ♥️