[In a ruined machine room]

The kidnapped high-school **** is bound to a shelf in a ruined machine room.
She hopes to run away before the kidnapper comes back.

But she can't ask for help because of the strict gag.
The over-the-nose-gag not only sealed her voice but also it made her breath difficult.

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The movie from 'Wabi-Sabi-Moe' the Japanese bondage website.