My Blue Summer

In April 2018, Luo Zhi attends an exhibition in Dongshan County honoring Takahata Isao. She glimpses an old diary she wrote in her teens about her secret crush on Sheng Huainan and realizes it may hold the key to their tangled past. She resolves to reclaim the diary, hoping it will illuminate the childhood romance she’s never finished. This moment reframes the present by reconnecting with a memory she thought was long gone.

In 1998, Luo Zhi is eight years old when her father dies in a factory accident. She meets Sheng Huainan, the young son of the factory owner, whose presence leaves a lasting impression. Her mother’s ongoing pursuit of compensation casts a shadow over their budding connection. This early encounter plants the seeds of a lifelong, unspoken affection.

Ten years later, Luo Zhi is in her second year at Zhenhua Senior High and is the top pupil, while Sheng Huainan transfers from a wealthy family. The arrival of a new rival intensifies school dynamics and her mother’s pressure over compensation from Sheng’s family. Luo Zhi’s admiration for Sheng Huainan is rekindled as he brings quiet charisma into her world.

Luo Zhi leaves a chalk message on a wall, quoting Only Yesterday, and Sheng Huainan replies, sparking a private line of communication. The exchange deepens their connection without either fully acknowledging their feelings. The wall becomes a symbol of a shared memory beginning to reemerge.

Ye Zhanyan, the school beauty, steals Luo Zhi’s private diary, complicating the love triangle. Soon after, Ye Zhanyan and Sheng Huainan become a couple, redrawing the social map of the school. Luo Zhi watches from the sidelines as the diary’s contents reflect her hidden emotions and intensify the heartache.

With the university entrance exam approaching, Luo Zhi remains the top student while Sheng Huainan slips to 24th. Rumors circulate that they might travel abroad instead of taking the gaokao, highlighting how ambition, fate, and romance collide under pressure. The possibility of an external escape adds distance to their already complex dynamic.

By 2012, Luo Zhi studies Law at a university in Xiamen and unexpectedly runs into Sheng Huainan, who is working on a student film. He reveals that he has broken up with Ye Zhanyan, reopening the possibility of rekindled interest. The city becomes a new stage for their evolving relationship.

Luo Zhi co-stars with Sheng Huainan in his arty student film Endless Love, bringing their past into a shared creative space. The project deepens their bond and makes their growing closeness feel natural, even as they hesitate to name their feelings aloud. The film becomes a catalyst for their renewed connection.

Sheng Huainan explains he’s been searching for the original line from his favorite film, Only Yesterday, a thread that ties his present to Luo Zhi’s earlier message. Their mutual interest in the film blurs the line between memory and reality, strengthening their bond. The quest for that line mirrors their own search for clarity in their feelings.

As growth and real-world responsibilities press in, the two grow closer yet still refuse to confess their hearts. The weight of adulthood and past memories complicates their romance, turning a simple attraction into a long, secretive tension. The story pivots on how to translate a deeply felt emotion into action.

The diary from Luo Zhi’s youth remains a quiet link between the childhood crush and the present. Its pages contain the unspoken longing that continues to shape their decisions and perceptions of each other. The diary’s presence keeps the memory vivid even as life moves forward.

The story frames their relationship as a long-secret love spanning childhood to young adulthood. It suggests that the couple’s fate may hinge on courage, timing, and the recollection of shared memories. The summary closes with the question of whether they will finally express what has endured all along.