I've examined the original dohnadohna english exe that was posted on /v/: w w w d o t mediafire d o t com slash file/tdcg0bt78cxbs2l/dohnadohna.exe/file (size 8.91MB) (account is new, I can't post links)
The protection is same as the other shiravune games, it should be crackable properly (without having to use the jp exe) and hopefully run with fewer bugs than using the japanese exe.
There are 162 "stolen" kernel32 imports and 180+5 initterm initializers "protected". I'm still very much willing to crack this, but so far I've yet to encounter anyone willing to share a serial or online activation with me. I could try to locate those values using the jp exe, however that is very tedious and error prone when they can be extracted from an activated game (the values get decrypted after activation).
I will post this in the other thread and probably ask the original uploader on nyaa and other places to see if they're willing to help with this.