Oh is that why many are like "Yeah so this is your 'landlady' (although that is truly, in literally every scene, very clearly your mother), would you like to rename?"
It really is the cheesiest work around for anti-incest and could get devs banned from patreon if someone tries the game and renames the landlady as Mom. I have seen a few games where the MC is staying with Aunt (not related) or family friend which are way more realistic story wise.