Silhouette of star eyes

Kasumi is a somewhat clumsy 14-year-old girl. Her best friend, Mariko, is deeply in unrequited love, and Kasumi also becomes interested in Kuzumi-kun, the person Mariko is secretly in love with. However, Kasumi holds in her heart the memory of a boy who gave her a "star fragment" when she was little. ... When will she be able to reunite with the person who gave her that precious memory?