Man, I love Kiyomiya, but it could not be more obvious that NOAH is trying to turn him into their Okada. Same tights, similar robe, it's pretty blatant.
I disagree with your statement, Kiyomiya is very different from Okada in my opinion, he's more humble and has a very different in-ring style from Okada's. If anything he reminds me a little bit of Misawa-San with the same colors and the same attitude. Besides, a lot of Wrestlers wear that kind of entrance gear in Japan nowadays, like Miyahara in AJPW for example.