Have some ambient sound while you read. Ideal “sound” when you are not in a mood for “music” * We also have “Book Partners OTAKU”, a version with OTAKU illustrations. (Sound sources used in the "Book Partners" series slightly vary between products.) [How to Use] It is an application made of natural ambient sounds. Click the illustration to hear the sound. Press “BACK” button on your terminal device to stop the sound. Press “HOME” button to use other applications (e-books, etc.) while listening to the sound as background. You can use the sound as background while reading books, printed or electronic, as well as healing tool when relaxing. Caution The sound may skip when the processor of your terminal device is overloaded. Please note that the number of sound sources and their variety may change in the future updates.