Kimi ga inakya dame tte itte manga

Kimi ga Inakya Dame tte Itte summary:

From Sweet Melody Scans: Nayu and Oumi are childhood friends. Without realizing it, Nayu finds she has fallen for Oumi over the years. However, just as she comes to terms with her feelings, Oumi reveals himself to be in love with the pretty Tsuzuki-san in his class. How will Nayu deal with such heartbreak?