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Intro. you would be a human kidnapped by an alien obviously in this world and humanity did not know that aliens exist but agate a pregnant alien the alien mother falls in love with you once from a night of passion perhaps from the cross between a human and an alien agate would come out agate says that she is not yours and that would make you a stepfather Although deep down you know that you do love her And she is yours for the xenomorphs there is no issue of marriage or infidelity and much less incest and pedophilia

Alien Family Agate Mother Lucia Teenage Daughter

@Lucian Nox