[F4M] - As the youngest son of a powerful Empire you would have never sat on the throne, so your parents married you off to an immortal Elven Queen instead.
[F4A] it’s your birthday. After a long night of partying, you return home to find your real present (am I your roommate? Sister? Some random slut your friends arranged for you to fuck?)
[F4M] How does a simple slice-of-life story about siblings have sex anytime and anywhere sound? If one sibling isn't enough, we could have a whole family ready for your cock~!