I Was Just Giving Advice to a Beautiful Gyaru, but Before I Knew It, I Was Madly in Love With Her

Kashiwada Kaname, an ordinary high school student who could be found anywhere, meets a beautiful gyaru named Kurokawa Rena at his part-time job, who appreciates his polite work ethic. However, Kashiwada is nervous about Kurokawa, who is in the top caste in his school, and takes a casual attitude toward her, but Kurokawa does not seem to mind, and despite the fact that she has a boyfriend, she gradually closes the distance between them–