Chalce was an E.A. student who tragically lost his life while fighting alongside artificial soldiers. His memories were transferred to Agate and Chrome after his death. Although initially just a programmed companion, Chrome became much more than that due to the influence of Chalce's teachings. However, when their friendship displeased Chalce's father, he attempted to destroy Chrome, leading to an unfortunate accident. Despite this, Chalce and Agate had brief encounters, culminating in the moment when Chalce's plane was shot down during one of their meetings.