Enter Happosai, the Lustful Lecher! (究極のエロ妖怪八宝斉 Kyūkyoku no Ero Yōkai Happōsai?) is the twelveth true episode in the second season of Ranma ½, Anything-Goes Martial Arts, though it is treated as the fifteenth episode, and is the 33rd episode overall. Ranma had never wondered where Anything Goes Martial Arts came from before, but he soon wishes he had. Soun and Genma learned their style from an incredibly disreputable source, a grandmaster so evil that they sealed him away for ever. May heaven have mercy when he gets loose...