On the day of the joining ceremony, she looked at the boy's straight spine as he wore the league emblem, and her heartbeat suddenly skipped a beat. From picking up the fallen regiment badge for him, to meeting him again in later activities. But when the wind of graduation lifted the corners of her school uniform, she was shocked to realize that this long-lasting heartbeat was just a long monologue about running after the light, and all the past memories became yellowed footnotes in her memory.
Concept: Later she realized that there was something like the moonlight falling in a deep pool from the beginning, seemingly embracing each other, but actually separated by the entire world.