Suki desu, Yume Ou Yume-kun

A second-year middle school student busy with her idol activities, ends up taking photos for the boys' volleyball team's album. As soon as he starts taking photos, he becomes obsessed with the adorable volleyball team member, Saki Yumeno! From that day on, she begins spending her days gazing at her "second oshi."

(Source: Shogakukan, translated)