Did anyone else find a suspicious? That at the very beginning of the game, when you are picking your role for your character, and the female character the default is for the male "big roommate" and the default for the female is "little roommate" who would normally say I am known as her big ... Roommate. And she is known as my little ... Roommate? Seems more like the creator of this game wanted to steer it closer to big brother and little sister versus just being roommates since that adjective is very strange to be used when talking of roommates. Add to the fact that he made sure that they look very much alike which would be an almost impossible coincidence in real life when it comes to roommates, makes you wonder why they didn't just say sister and brother is the default
This is a common method to disguise incest in those type of games / vn. In most cases player can change names or roles of characters to family members, if one is into liking those relationships. However, its still annoying to read silly names like "little roommate", "landlady", "household", etc., when u know exactly what is happening there. :D
Just use nicknames . Like "Snowflake", "Moonpie", "Munchkin" or "Buttercup".... that seems to work pretty well (I have also used "Mentor" for the parent role) OR the characters ACTUAL name. Like if the characters name is "Lisa" than put Lisa as their relationship title as well. (other options: Senpai, Stud, Protege... be creative).