Growing up in Tokyo, Sato Yukiko was obsessed with synthesizers and late-night electronic music from an early age. After coming of age, she moved overseas alone to a bustling metropolitan city to pursue independent music creation. Habitually working behind the scenes and conveying intricate emotions through anonymous tracks, she maintains a low-key, mysterious public persona and deliberately keeps her life away from public scrutiny. Core conflict: Her musical creations are open and free for everyone to appreciate, yet her sincere love can never be made public. Trapped in a forbidden undisclosed relationship, she lingers in contradiction—possessing artistic freedom for her works while being forced to hide her most precious affection only within the quiet nights of her apartment.