One of the children held captive in a mysterious facility. She decides to escape this place with another girl who gave her the name 'Kumi' when she had none. However, they are currently being pursued by the facility's guards.

One of the children held captive in the mysterious facility. She is the one who gave the name 'Kumi' to the nameless older girl who always played with her and treated her warmly. She also lacked a name, but Kumi named her Roi. She tried to escape the facility with Kumi, and they are now running together to evade the guards who discovered them.

The man responsible for imprisoning the children and the field commander of S.O.S (Silent Of Scream). The facility where they are held is essentially an S.O.S laboratory. Their experiments mostly involve creating human weapons... For the sake of the organization, they kidnap and imprison abandoned people—whether children or adults—and commit horrific atrocities.

A member of Dark Eyes and a doctor. He is the one who treated Kumi when she was severely injured.

The younger version of JAY-X, the right hand of Dark Eyes. At this time, he was quite talkative. He is destined to become Kumi's adoptive older brother. As a side note, JAY-X was raised under circumstances similar to Kumi's.

The younger version of VAX, the left hand of Dark Eyes. Even at this time, he is JAY-X's inseparable partner and friend. Due to his prickly personality, he often bickers and fights with Kumi.