Iribitari Gal Ni Manko Tsukawasete Morau Hanashi In English Portable [hot] -

The story follows a geeky high school student and his "gyaru" classmate, (also referred to as Hikaru in some translations). Kuroda frequently visits the protagonist's home to read his extensive manga collection. In exchange for a quiet place to lounge and read, she establishes a "fair trade" where she allows him to use her body for sexual favors. Key Series Information

Translated to English, this phrase roughly means: The story follows a geeky high school student