Researchers have been studying the shards, attempting to understand their significance and how they relate to Yuka. Some have suggested that the shards may be connected to an ancient ritual or ceremony, one that was used to harness Yuka's powers. Others believe that the shards may hold the key to communicating with Yuka, or even summoning her.
If you can’t find the patch via those legal channels, the project may have been taken down or never publicly released. I’d recommend asking in specialized subreddits like r/romhacking or r/translations, but — that will get you banned. yuka scattered shards of the yokai v107 r1 link