Not right now

You decide that fucking your little sister for the first time (well, for the first time that you are present for it) should be reserved for a special moment. Right now, you're still too overwhelmed by the reality of this situation. You want to have a clear mind when you bang this little cutie.

"No need", you answer diplomatically and try to get out of bed without exposing yourself, then remember that she is pretty much your concubine and has seen everything already. You grab some boxers and go to the bathroom, but pause as you hear a sound coming out of your older sister's room. Is she home too? Normally, only Anna still lives with mom and dad, but just like you, Rachel visits from time to time and sleeps in her old room on these occasions.

Suddenly you realize that the sound you hear is moaning.

Very sexual moaning.

This day is just getting crazier by the minute. Not being able to stifle your curiosity, you carefully open her door and peek inside. Indeed, your older sister is home. Not only that, she's also lying naked on the bed, her long legs up in the air, getting railed by your father.

Quickly you close the door again. Welp. You did always have a better relationship with Anna, looks like for Rachel dad was the male she trusted most in her life. Good to know.

You enter the bathroom to do what you've come here for. The cold water does wonders to clear your mind. It looks like your meeting with Charles was real after all, and the world has changed according to your specifications. You try to recall your conversation. First, you made girls be submissive and respectful towards older males, which you couldn't quite verify yet because Anna was always rather respectful towards you. But the second change is more important: You made sex a normal show of affection and trust, which clearly worked with both your sisters. You also remember that the male-female ratio of the world's population changed - 25:1 was it? That would mean you can expect about 25 concubines. You wonder which of your friends are already in your harem - it's dependent on trust and friendship after all. Tzuyu, a friend from High School, could definitely be a candidate. Your cock stiffens thinking about her petite body and her cute face. Then there's Sarah, a bit of a tomboyish girl who used to hang out with your group of friends. You grew apart a bit, but if she's still unclaimed, you could rekindle that friendship and make her yours. And then, of course, your girlfriend Sophie. You were in a typical young adult romantic relationship, but does she really trust and like you enough to still qualify as sex partner in this new world?

And that's pretty much it. You realize that you really don't have many female friends. What if everyone is already claimed?

Pushing those worries out of your head, you finish your shower. At the very least, you'll always have your little sister and Tzuyu; for those two alone this was worth it. Though Charles did offer you to pick any rules, so you could literally have made every single Asian in the world your cumslut, or make all teenagers wear lingerie in public, or make it normal for cashiers and pizza girls to blow their customers, or make **** normal, or... No. You've made your choice deliberately, that's how you want it.

Full of determination, you dry yourself, put on your underpants and go back to your room, where a nude Anna is waiting for you, asking you what she should wear today. Excitedly, you go to her room and go through all her clothes, before you pick some cute lace panties, a matching bra, stockings, garters, a gorgeous yellow dress and silver high heels. Who needs anime dress-up games when you get to dress up your sister? You take mental note to take Anna shopping at some point and buy her the most outrageously erotic clothing.

While she takes a shower, you get dressed and go down to have breakfast. Your mother greets you with a hug. "Morning, mom", you say. "Oh, you've made pancakes! Thanks!"