Synopsis of "Our Secret Diary" Film

It follows the story of a second-year high school student Nozomi, who discovers a love confession letter on her desk from Setoyama, the school's most popular boy. Uncertain if it's a prank, she initiates a secret exchange diary with him by responding in the shoebox. Unbeknownst to her, both the letter and the diary were intended for someone else - Setoyama's close friend. Despite the initial misunderstanding, Nozomi continues writing to him without revealing her true identity, gradually developing feelings for him. Simultaneously, Setoyama misses chances to confide in her, leading to an unforeseen twist in the storyline.