START-600 Hibiki Natsume retires. The nameless AV actress's last sex scene.

A retirement documentary closely following AV actress Hibiki Natsume on her final day. Starting with her morning routine, she is shown in extreme conditions of high temperature and humidity, dripping with sweat and bodily fluids. A four-way scene where she loses herself in a frenzy of orgasms. "Nameless Sex," a song recreated from a pre-debut release. Soon, she will return to being "the nameless girl." Hibiki Natsume, her straightforward eyes watching the end.