A Star Brighter than the Sun manga volume 3 features story and art by Kazune Kawahara.

When Sae comes to a friend's defense, Koki ends up defending Sae's reputation… with his fists. In the infirmary, Sae meets Subaru, a charming girl who might be Koki's secret crush. Meanwhile, some of Sae's friends think she's dating shy Yota. Appearances can be deceiving, especially when emotions are running high…