Obviously the characters are meant as his family members, it's just a lame excuse to circumvent Patreon rules, please don't try to make into into something that was just a family from inception.There's no family and "story mode" doesn't exist. You finished the "main route", not the entire game.
Even if it is the main route, adding nonsensical games and gimmicks instead of porn scenes is a giant waste of time. Patreon followers seem to fall into a culty behavior and let themselves be milked of their money for years... adding new scenes should not take so much time, specially considering the amount of money that he has been making with this.