Last year, the song "God in lavatory (Toire no Kamisama)" became a big hit in Japan. In the song, It is said that the beautiful goddess lives in every lavatory, if you clean your lavatory every day then you will become as beautiful as the goddess.
When you visit a temple, you can see the statue of Buddha whose name is Ususama-myoo in the lavatory. Ususama-myoo is not female, and his face looks angry. His characteristic is to clean everything. So, the statue of Ususama-myoo is often placed in lavatory.
The following pictures are the statue of Ususama-myoo in Kasuisai temple. It is one of the most famous statues.