It was from last year at the Ji Kyū Hospital haunted house, in the "hidden half-floor" that was locked away—it was the Yellow Talisman that was hidden there!
Comparing the second and third pictures, the two talismans weren't exactly the same, but one could see their similarities; they definitely came from the same curse system.
They were the Breeder's talismans.
That Breeder who, at the time of his self-destruction, vowed to become a ghost story to seek out Kamiyagawa, this was definitely his Yomi Naraku curse!
Buzz, buzz.
The phone continued to ring.
Yuuki sent a location and a message:
[Kid, what I've found here is not quite right, the Breeder's Yomi Naraku curse has appeared on Tsushima Island in Nagasaki, you need to come over.]
Kamiya's expression darkened, "The Breeder, he's come back?"
...