Milk
A war hero lives for ninety years and saves an alien. They are so grateful they offer him another life. At their urging he chooses to become a beautiful bisexual female. She has her share of affairs and is successful in business.
Tags: Ma/Fa, Fa/Fa, Consensual, Romantic, Magic, BiSexual, Fiction, Science Fiction, Historical, Humor, First, Safe Sex, Oral Sex, Masturbation, Body Modification, Transformation