Why exactly practice budo sports at Budoschool Kai Sei? Because the offer of karate-do, competition karate up to top sport level for kumite, judo, competition judo, jiu-jitsu, kickboxing and competition kickboxing makes Kai Sei unique in the regions Haaglanden and the Green Heart. From Rotterdam to Amsterdam and the Scheveningen coast to Utrecht and maybe even a larger area there is no comparable officially recognized club to be found in defense sports/fighting sports.