Hopes crushed.
I looked up every 9stam maruzensky on uma.moe and umadb, and none of them are undefeated with the classic triple crown. All of the ones who are undefeated don't risk the Kikuka Sho, and all of the ones stupid enough to run Kikuka Sho lose somewhere along the line.
I really wanted a seed to grind for True Way of Kings, but I guess I'll have to tackle that challenge myself instead.