Back then, I used a cheap method to find different anime via a server-side randomization function, so I stumbled upon this anime because I found the main poster catching. The database was parsed from this url(
https://animevost.org/get_random_post.php) It's in Cyrillic, and was a dirty hack, but it worked.
If the anime was on this website, then it should have had a russian fandub, I hope this helps narrow down the search. I've already tried checking webarchive with no results.
I'm not really sure how helpful that is, to be honest. I mean, it probably isn't.