Just in case if you haven't noticed it already, the
TIPS thread has been created as a sticky on top of this sub-forum.
Please feel free to utilize them in your quest to solve the mystery. As stated in that thread, no posting is allowed there unless you can help contribute by translating some of the TIPS.
As of today, all the TIPS for the Onikakushi-hen chapter have been done. As the most recent episode was the beginning to Watanagashi, we've gone and started some of the Watanagashi-hen TIPS up to the relevant point of most-recently aired episode.