Percival is the top Auror in the US, he's the heir of an old and respected family, he's filthy rich and ridiculously handsome, he's charming and suave and sharply dressed. Half the MACUSA wants to be fucked by him, the other half wants to be him. He, however, has serious trouble getting it up and keeping it up. It's a source of great anxiety and shame for Percival, who resorts to all sorts of home remedies, magical and no-maj alike, because he's terrified that it'll turn into a rumour if he sought professional help. Whether the reason for his dysfunction is Percival's age or the trauma of one year in Grindelwald's captivity or both is up to the author.

Enter his new romantic partner, be it Newt or Credence, who is more than willing to make love with him. Only Percival either finds a reason not to have sex at all or always entirely focuses on his lover, giving him spectacular blowjobs (he developed the skill to compensate). One can't keep a secret forever though. Unexpectedly, Percival's lover is kind and understanding and doesn't mock him and is willing to find work-arounds his problem and encourages him to look for real help.

Bonus points for:

-Percival feels pleasure and can have an orgasm and ejaculation, he just can't get hard
-More spectacular blowjobs/Percival's kneeling and submissive
-Prostate stimulation
-Percival bottoming and coming while soft
-That becomes a mutual kink