This is an offset multi-cache. For safer and joyful geocaching, you are advised to have protective gears including long pants, long sleeve shirt and water resistant shoes. Never attempt this in the night.
The listed coordinates are somewhere between Entrance to Ryuou-no-taki Waterfall cache and the waterfalls. There is no physical container at the coordinates. From there, further follow the trail to come down to the river then look for an exact place where the following picture was taken. The cache was hidden right there!