I finished
an attempt at the European version a while back, but I canceled the submission because the community wanted to see the 60-Hz original version. This made sense because most of the text in the game is skipped immediately, removing the benefit of using English.
The techniques I used still apply to the Japanese version, of course. In fact, I converted my video to the Japanese version, but was discouraged that my run was slower overall relative to
a run published on Nicovideo. I was exhausted from creating my video and wasn't able to contact the creator of the faster TAS for more information, so I sort of just sat on my speedrun and gave up.
It's worth noting, though, that while the Nicovideo run is faster than mine
overall, it's quite a bit slower in certain sections of the game. This gives me hope that elements of my speedrun might actually be accepted on this site... given somebody who's sufficiently dedicated to finding the remaining optimizations.
It's been a while since I dusted off my TAS folder. I'll dig into it, find the latest version of my TAS on the Japanese game, and share it here within a week. It's my hope that having an existing run will be a huge help to those working on the game.
Also,
here is an older topic on the same game. There may be some helpful resources in there.
Good luck!