Tutorial Sony Z Ultra/ Sony japanese keyboard port requested

Hi!

I can't access the developer section, yet! ^_^
Has anybody come across Sony's japanese Keyboard? I had it on my stock rom. Since I'm on CM11/togari I've only the standard keyboard.
Liked that keyboard very much, so any help is apreciated! ^ ^
All I found is Sony's chinese keyboard... but I don't need chinese on my phone.