Six prodigies attend Kanezono Academy of Music, each with a mysterious past and a “color” tied to their soul’s melody. The story follows Ren Hayami, a withdrawn violinist who hasn’t played since his sister’s suicide. On his first day, he hears her melody echoing through the old concert hall—played perfectly by a girl he’s never met.
Soon, Ren and the other students are drawn into the “Symphony of Souls”, a ritual that binds their emotions to music. Every performance drains something from them—memories, feelings, or fragments of life itself. To graduate, they must each compose their Final Piece, but the truth is grim: only one can complete it, and the rest will vanish into their own unfinished songs.

In the quiet of the dormitory, Ren and Ema made a silent pact.


"If one of us disappears," Ema whispered, voice trembling, "the other will finish their melody."


Ren nodded, gripping his violin. "And if we both survive… we'll find a way out. Together."


The crimson thread wrapped around Ren's bow tightened, as if acknowledging the promise. Somewhere beneath the stage, faint echoes of past students hummed in response.


We are not alone. And the academy knows it.


Chapter 19 - The Pact