Hoshigawa Kurumi has a crush on her classmate, Nikaidou Nika, who sits in front of her in class. She's popular with guys so she has no trouble going from boyfriend to boyfriend. One day, Nikaidou borrows an eraser from Hoshigawa.
Philia to Eros no Aida is a completed manga by Yorita Miyuki. It blends romance, girls' love and drama. You can read all 15 available chapters of Philia to Eros no Aida online for free on MangaPulse; the newest is Chapter 15, added 2020-09-26. The series is finished, so you can read it from start to end in one go.