Ok, i'd like to add a few more notes. I think the game's author should introduce an additional variable into the relationship system. At the beginning of the game, you decide on your name and how to set up your relationship with the landlady and the roommate. So, change "landlady" to "mom/mother" and "roomate" to "sister." In the texts, it works a certain way. 
But not the other way around. I understand that a mother generally calls you by your name. But not always in every possible situation. For example, if they have to call you for dinner, they call you by your name. But if you're in a context with other people and are introduced, they don't just introduce you by your name. They also add "he's my son."
The Mothers and sisters practically never say "son" or "brother." This makes the relationship system a bit less meaningful. That excitement that should be created in the plot, in short. 
There's another small problem. When the protagonist speaks to his sister (roomate), he always says "my mother." He doesn't say "our." The same goes for his sister; she also always says "my mother," not "our." This is a less significant problem than the first, but adding these additional variables would make the text easier to read. For the first factor, that is, son and brother. Simply add an additional variable to the relationship system. That is, what do you want the mother to call MC? Same thing with the sister. You could then add a random variable, where the game randomly decides whether they call you by your first name or son/brother. 
Let's be clear, it's not a big problem. But it does make a difference to be able to read about "brother" or  "son" every now and then. In terms of excitement. For those who choose a plot based on the family context.
Anyway, i'm still finishing the first part of the game. So for now, I'll only talk about the first part.  I'm putting everything under spoiler, in case there are people who don't want to know anything. 
Thank you