Kaoru Sugimura  

, 杉村薫

Kaoru, a 17-year-old virgin who enjoys S&M as his main hobby. He has purchased various gear but lacks a partner. Nana, his perfect next door neighbor, has been close to him since childhood due to their single parent working parents. Kaoru secretly loves Nana and imagines her in tandem with his S&M equipment. One day, his mother discards all of his gear and asks Nana to hold onto it for the night so he wouldn't be able to hide or find it. Later that evening, Nana accidentally locks herself inside one of Kaoru's leather outfits while trying it on "for size" and must seek assistance from him to unlock it.