The Misty Lake is a large lake at the foot of the Youkai Mountain, a place few humans ever approach. In the day, a heavy mist cloaks the lake, lowering the visibility. Why does mist only cover the lake in the day time? It's a mystery...

Fairies and youkai often gather at the lake, especially in the summer when youkai are on the lookout for water. The lake looks very large, perhaps because the mist makes it hard to see across, but it would not even take you an hour to walk its circumference.

The lake is famous for the huge monster fish that can be caught during the new moon. Many fishermen come to try their hand at catching it, but most either go home with their dreams crushed or end up being caught by youkai themselves.

The river that flows into the lake comes from the Youkai Mountain. Sometimes you can catch the soothing sight of kappa drifting down the river too, but try not to laugh. Even a creature good at swimming like the kappa can be swept away by the current.

There is a scarlet mansion on the shore of the Misty Lake. If you go farther, you will see a ruined estate. With some luck and good ears, you might be able to hear the Prismriver Sisters rehearsing. Reimu once travelled over the lake during a past incident when scarlet mist covered Gensokyo.