Synopsis
Kaoru is a 17-year-old virgin with an S&M fetish. He has always fantasized about having an SM relationship with his childhood friend Nana, who is seen as perfect and constantly draws the attention of other boys. Over the years, their relationship has grown somewhat strained because they hang out with different crowds and Kaoru hasn't been taking his studies seriously. One day, however, Kaoru's mother gives some of his S&M toys to Nana for safekeeping. Nana discovers the leather one-piece that Kaoru bought and tries it on, but accidentally locks herself into it and doesn't have the key. Kaoru helps her out of the one-piece, but then Nana realizes she might enjoy Kaoru's hobby more than she initially thought. As a result, the two of them begin engaging in so-called "breathers." These sessions are meant to relieve Nana of stress, which comes from her constant efforts to maintain her perfect grades and flawless reputation.
