The incest tag is needed, also seems to be a harem game, so that tag should also be added.
Found also something regarding the variables, there should at least one variable be added. Because, if you add some definitions, the variable "brodname" don't always fit. It's basically lacking a variable to define the relationship between the two "tenants" (sisters) and the MC, e.g. if you play it with incest, it would be siblings, but ATM it shows in the conversions that they are "brothers" which makes no sense with a girl involved. For this release, I added the variable "sibname" and changed the dialog at specific points to use it. Don't know if I found everything, where it fits. Sadly I'm not as skilled that I could make it a option to change it during the game play, you have to change it in the "VARIABLES.rpy" file or with the console ingame, if you don't want incest. And you should use the singular term (e.g. sibling instead of siblings or friend instead of friends) to avoid double s. Just extract the files into the game folder, for anyone, who is interested.
Also the hide button seems to be disabled... I don't know, why devs tend to mess with the basic functionality of renpy... I'm not able to change that, again because of my lacking python skills.
If you find a line missing or still doesn't make sense, please report, so I can fix it.
EDIT (April 29th '24): Updated the files for game version 0.1.3 . As always, if you find something, that I may have missed, please let me know.