Hoshikuzu Drop

Shino is a high school student transferring schools from Tokyo to Ibaraki. When he’s late for his first day at school he meets a beautiful girl, Sera Ichigo, standing in the shade. As the day goes on, he gets carried away and accidentally winds up in the Astronomy Club. There, he discovers that Ichigo is actually a member! The Astronomy Club takes the stage, and Shino’s sparkling youth days begins!

(Source: Kodansha, translated)