Why bother to fall in love anymore?

Matsumoto Satsuki had a crush on Tachibana Makoto since middle school. Yet, she never confessed. Even if they entered diffent high schools, they still keep in touch and go out with their friends occasionally. One day, Makoto brought along an old friend that just came from Australia, Rin Matsuoka. Satsuki didn't seem to care about him since she knew his reputation in high school. But what if he cared about her? And, after Makoto rejects Satsuki, will she open her heart again to Rin?