Do you mean Howl's route? If so, Howl the wolf 🐺 is already funded☺. You can look up above to see all the 12 available bachelor's the team is developing.
Unfortunately, they cannot add more I would think 🤔 because adding the characters came as part of their crowd funding process. They can only add so many characters based on what funds they get for the game to fund them. Games like this take a lot of funds to produce everything they're providing. Music, voices, versatile characters, coding, art, etc. But I'm still surprised we're getting as many dateable characters as we have😄!
Likely, since you have to pay people to make certain aspects of the game you may not be doing urself so all the money doesn't just go to the main artists or authors. Unless...well, your very lucky and they are talented in everything. Most cases require the main team to hire out voice actors, coders, extra artists to take care of scenes that maybe the main artist can't do or has the time for.
Sadly, this usually leads to most BL otome games having maybe only 4 LIs(romance routes). In this case not only is this the first time I'll be seeing this many achieved and completed, I think it's also really awesome that we get to even have so many!😆 Lol, now I just can't wait!