The Shiki production recently celebrated its 35th anniversary in 2018, and as of this year a brand new Cats-dedicated theatre was built in Tokyo.
However, Cats in Japan is different—although it was based on the original 1981 London production, it still has made plenty of changes for the sake of localization and artistic sensibilities.
Some productions use up to 33 named cats, however the current Shiki production uses about 25 characters.