[F4M] Your geeky, silly little sister finally convinced you to let her see your dick! What sexy hijinx will the two of you get up to?~ [Send Starters!]
[F4M/Fu] Your big sister is here to "treat" your hyperspermia condition, whether you like it or not. Your only choice in the matter is her personality! No-nonsense and curt? Teasing and seductive? Pissed off and man-hating? Let me know!