I know it makes no sense to restrict your artistes' videos within Japan cos people like myself can use VPN to bypass the network
DVD region code restriction I can understand but doing that for videos as well it's so extreme and that discourage potential fans to discover Ken's music & also for others who're under Sony Japan as well
Anyway , this has been happening for a very long time . Sony Japan really should learnt a thing or 2 from Universal Japan where their artistes' DVDs are region free :3