Ok, I have figured a out a way to get Kasai a PB.
1. Gather 40,000 autographs so I can start a 'civil procedure'
2. The Dutch government could exert pressure on Japan.
3. Even though it's bound to fail, it might get some media exposure here, which could be picked up in Japan.
4. Aki-P talks it over with Hori pro and they're like "well, if fans go through this much trouble we might as well give her a PB."