​Shuuto Tsuda woke to a soft, squishy sensation.

​Rubbing the sleep from his eyes, he sat up and looked toward the source of the feeling at the end of his arm—only to find a girl sleeping there.

​She was breathtaking. Lustrous silver hair, delicate features, and skin so pale it was almost translucent…

​She had a slender neck and narrow shoulders, contrasting with her surprisingly ample bust and a tightly cinched waist…

​The rest of her was hidden beneath the duvet.

​So far, the mentions of clothing were exactly zero. In other words, she was stark naked.

​She didn’t have a single stitch on.

​Then, Shuuto realized his hand was currently gripping one of the softest parts of the girl’s body—specifically, her breast.

​”Wha—Gaaaahhh!?”

​He let out a panicked yelp and scrambled out of bed as if he were escaping a fire.

​”Muuu…”

​Drawn by the noise, the girl in the bed stirred and let out a long, languid yawn. By some miracle, her long hair draped over her chest just enough to cover the most critical areas, but it was still far from a sight a teenage boy should be witnessing.

​”Luxuria!? What are you doing in here!?”

​”What do you mean…? It’s perfectly normal for lovers to sleep in the same bed naked, isn’t it?”

​”How is that normal!? And for that matter, we aren’t lovers!”

​”Oh, that’s right~I guess I’m more of your… slave?”

​Luxuria stuck out her tongue with a playful tee-hee expression, as if she’d simply made a silly mistake.

​”I never had any intention of making you a slave…” Shuuto muttered.

​However, because Luxuria had Fallen due to Shuuto, she was technically under his control. Apparently, those were the rules, so there was no helping it. Since the whole thing had happened entirely by accident, Shuuto was still utterly bewildered by the situation.

​”Anyway, let’s save the complicated stuff for later. Come on, give me a morning kiss.”

​Before he knew it, Luxuria had crawled toward him. She leaned in close, her lips pouted.

​”I keep telling you, no!“

​”Jeez~You’re the one who made me Fall, you know. The least you could do is take responsibility.”

​”Even if you say that…”

​It had been an unavoidable accident.

​Shuuto had simply fought his hardest for the sake of his sister and for humanity. He thought that if he won, everyone would live happily ever after… or so he’d assumed.

​He hadn’t expected this kind of side effect.

​I mean, it wasn’t that he disliked Luxuria, and he certainly didn’t mind being liked by her… but the fact that she was coming at him with such overwhelming force was, frankly, a bit much to handle.

​As for how things ended up like this…

​The story goes back to about a week ago.