Two prototype androids, developed as part of the Everloid project, were manufactured using a shared chassis. After the trial period ended, they were transferred to their respective creators. One was given simulated memories by Dr. Izumi and assigned the role of a daughter. The other was further enhanced by Dr. Kamikaze, undergoing extensive modifications to drastically improve combat capabilities. Following Dr. Kamikaze's death, internal conflict within the Kappa Ren organization worsened the fates of both units. Shion falls into despair upon learning she was an Everloid, while Runa faces new hardships. The struggles and inner conflicts burdening these two androids grow deeper, driving their destinies toward even greater hardship.