it also has 2 and 3 in Kanji, meaning we will get updates on the 23th
That video they sent if you look closely towards the end you can see what looks like an arm or hand.
looked at google images at kuchisake onna and it really looks a lot like her and the picture in the school map of the woman also looks like kuchisake onna. then again looking at the last bit of the video pausing it at the right moment you see something that looks like a pure white arm so it could also be the grudge.
looks like a traditional Japanese house
All these attention to details-- some of y'all may have careers in criminal investigation! LOL
its Lady Gaga