In the autumn when she was fifteen, Mochou tied a newly bloomed hairpin and went to the maple forest to release a red leaf that carried her wish. When she turned around, her light yellow mantle was lifted by the wind, and her beautiful image was deeply imprinted on the heart of the person behind her. It was not until later that she understood that an encounter was just an encounter after all, and the promise in the encounter was just a dream. After waking up from the dream, I can see clearly that what I missed when I was fifteen years old is the destined "grow together forever"...