In the cherry blossom city in late spring, the fallen flowers are like snow. Eighteen-year-old Mo Ying witnessed her brother Mo Yan drowning in order to save her at her coming-of-age ceremony. She was forced to live as someone else's shadow in the name of "Mo Yan" - imitating his handwriting and smile, and shouldering the shackles of the ancestral motto of "Twins are one, one will die to save his name", but she gradually lost herself in the trauma of PTSD. Until he met Xiao Lingyu, the young man with a guitar in his arms and a pear-shaped smile, and he used the music of "Symbiosis" to knock on the closed door of his heart.
From the trial of their first meeting on the rooftop to the tacit understanding of painting "Eternal Symbiosis" together in the studio, Xiao Lingyu became Mo Ying's light against the family conspiracy. They uncovered the murder behind the "ancestral precepts": their parents were silenced for opposing the persecution of the twins, Uncle Zhou's transformation from an eyeliner to a savior, Gu Yan used empathy to heal the pain of losing his sister, Lin Wan used the camera to record the group portrait of "symbiosis"... When the pocket watch changed from a token of trauma to a carrier of hope engraved with the "Oath of Symbiosis", and when the cherry blossoms changed from a wounded sorrow to an eternal covenant, the two finally understood: love is not a replacement, but the light that makes each other free.
During the cherry blossom season, they exchanged symbiosis rings under the cherry blossom tree engraved with "Yan Ying", and swore with the music of the piano and the brush: "See you under the cherry blossom tree in ten years." Wherever the wind passed, the petals were like rain. It was my brother's smile, Xiao Lingyu's song, and the proof of all love and being loved - I want to see you when the cherry blossoms are falling, because I want to tell you: I have become my own light, and I have also lived to live in symbiosis with you.
