Warning: INCEST. This is an awful story. No one should read it.
But you're still here. So I guess you're gonna read it anyway.
This is a story of incest, yes. And it's a sister-harem story. But it's not straight up smut. There will be a lot of other stuff too. There will be some kingdom building, some fighting and powering up and yes, there will be smut.

Darren is returning home to spend Christmas with his family when the world changes around him. The neighborhood he grew up in is swarming with monsters, the sky has changed and his family suddenly has magical powers. But unlike his sisters, who all have magical badass powers, Darren's powers only heal and purify. As if that weren't enough, one of his abilities only works on his sisters. And then, only if he fills them with his seed.
Even as Darren struggles to accept his powers, the new world won't wait.
The monsters are coming, and unlike with his sisters, it won't be a pleasant experience.