assets/diary/icons/yumo_temple_icon.png
assets/diary/icons/yumo_temple.png

Well, I visited the Temple of Yumo, but it has not brought any clarity in understanding what is happening in Pocket Kingdom.
Yumo's Temple is empty, but I found an unusual slot at the altar.

Perhaps if I will find the item with the same shape, it would change anything?
And may be then I can see Yumo?

I will have to continue my expedition.