The F-Virus (An Erotic Story of Gender Transformation)

Charles was working in a lab on a groundbreaking viral cure for the flu when a mistake by one of his coworkers caused the virus to go airborne. Most of his exposed colleagues were killed, but the virus has had an odd effect on Charles, rewriting his genetic code, rendering him female. While Charles is coming to terms with the change, his old professor and boss Dr. April pays him a visit, intent on helping Charles explore his new body.