Kimi to Mimi kara Koi wo Suru

Riku is a huge fan of HARU, a popular voice actor from the animated series called "Hako Ao" and whose appearance and personal info is unknown to his fans. One day, a transfer student named "Harukawa" arrives in Riku's class. He's handsome, but somewhat unfriendly, and for some reason, Riku can't seem to stop thinking about this new student.

(Source: Gentosha Comics, translated)