Tsurenai Kanojo No Hitorijimeつれない彼女のひとりじめ ; 独占冷淡的她

A story of youth and sensuality. A thrilling real high school love story! High schooler Nachi Shinohara is a social butterfly. He can get along with anyone. On the other hand, there's the lone wolf, Takizawa Yuuri. A chance exchange of words leads to a relationship that no one knows about.