Hensuki: Are you willing to Fall in Love with a Pervert, as long as she's a Cutie?

As far as it goes, a lot of lads, especially those who are teenagers, desire a girlfriend. Keiki Kiryuu does not stand out. His days of wishing for a partner appear to be coming to an end one eventful afternoon when he receives a love letter from an unidentified sender—along with a pair of white underwear. He then investigates a number of potential contenders, including his senior Sayuki Tokihara, his underclassman Yuika Koga, and his classmate Mao Nanjou, in an effort to find the identity of his hidden admirer, known as Cinderella. However, Keiki learns about the perverse desires concealed underneath each candidate's innocent exteriors as he works to identify who this mystery girl might be.