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Nature Sounds in Restrooms: Otohime's Growing Popularity

12/4/2025

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Summary

Story summary

Otohime, or “Sound Princess,” devices by Toto Ltd., generate nature-like sounds to mask bathroom noises in Japanese public restrooms.
A 2016 survey indicated that women flush less frequently when these devices are in use.
Originally designed for women’s restrooms, Otohime is now gaining popularity in men’s facilities.
As demand grows, the sounds produced are becoming more diverse to cater to various audiences.

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Story summary

Otohime, or “Sound Princess,” devices by Toto Ltd., generate nature-like sounds to mask bathroom noises in Japanese public restrooms.
A 2016 survey indicated that women flush less frequently when these devices are in use.
Originally designed for women’s restrooms, Otohime is now gaining popularity in men’s facilities.
As demand grows, the sounds produced are becoming more diverse to cater to various audiences.