Yūdai Yamaguchi (山口 雄大, Yamaguchi Yūdai; born 1971) is a Japanese film director who has worked mainly in the comedy and horror genres. He has "made a name for himself by mixing goofy gore with manga-esque escapades and plain utter weirdness".
Source: “Yūdai Yamaguchi”, English Wikipedia (CC BY-SA 4.0), excerpt