Hikari Utsuri are metallic versions of the Showa and Utsuri. It’s really hard to find really nice specimens of these varieties. One of the most important things to look for is a clean head. Unfortunately the ones I’ve seen don’t look very nice when they are young. It takes several years for one to develop to where it looks nice and it needs to be kept in excellent water to achieve its potential. That is true of any koi, of course. If you buy a tosai Hikari Utsuri be patient for a few years.