It's kind of chilling what a cruel creator god the dev is to his creations. Given that there is not going to be any incest or ntr, and that ntr in these situations actually seems to mean any even slightly romantic or sexual encounter where the mc isn't included... What I'm trying to say is the mc's family members' lives are destined to be devoid of romance and sex. His sister is going to die a virgin. Actually I remember the dev saying that all the women are virgins, even the mothers. No wonder mc's dad was a bit cranky. His wife gave birth to 2 babies even though he never got to dip his dick in her.