COOLDOWN

is a Japanese light novel series written by Masanori Date, with illustrations by Kouji Ogata. The series began publication on July 10, 1999 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
A transfer student came to the class of the problem child, Katsuki Himuro. The girl, who calls herself Yoko Asagiri, has an incredible beauty. She also has a positive beauty in contrast to Saya Kazuki, who seems to be a classmate of Katsuki and seems to like him, and her entire class makes a noise about her beauty. However, at the whole school rally on the day of her transfer, Yoko suddenly abandoned her mask. The crisis that attacks Katsuki one after another. Can Katsuki overcome the crisis? And whereabouts of the feelings of the beautiful girl Saya Kazuki? A non-stop story presented by an up-and-coming combination! Once you start reading, it will never stop ...