Eric Newberry marries into a nudist, incestuous family. During his first summer vacation at the Garden of Eden nudist camp his mother in law seduces him which leads him into the family's libidinous frolics. Though becoming involved in the family's sexual escapades Eric refuses to allow his children to be folded into the family fun. In chapter 3 his son and daughter are secretly "initiated" by their grandparents.
Lucien purchases a flute in a pawn shop, and immediately begins playing it. There's more to the flute and Lucien, than meets the eye. He's special, and so is his flute music.
Thanks to a strange birthday gift from his, apparently, half-beautician/half-mad scientist mother, all the girls that share Lucas's hot tub are acting more and more affectionate.
Isekai: He's a zero, a null sum. His life held no meaning. He had always known he was unremarkable, but to be singled out as a statistical anomaly even in the afterlife brought his insignificance to a whole new level. God hates anomalies and doesn't want a zero on the books. Neither, it turns out, does Hell. So, he's been given the chance to reincarnate into a whole new setting, with new challenges and opportunities to prove his worth and determine where he ends up once and for all.