Synopsis
Mi-na enjoys rough sex and she’s currently sex partners with Woo-yeong, who she met on a one-night-stand. Mi-na’s best friend, Jeong-hee, coincidentally witnesses Mi-na having sex and opens up to a new world. One day, Jeong-hee is invited by Mi-na to watch her having sex with Woo-yeong… 
Original title 관전녀
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