Aimou, as artificial life, inherently possesses a soul, which comes from Alice. The Philosopher's Stone is embedded in the Constant Motion Core, serving as the foundation for Aimou, covering the Alchemy Matrix of the Shared Chord Body and thus spreading throughout the entire body.
In the chaotic timeline, after receiving the Devil's blessing, the Philosopher's Stone shattered and fully integrated into Aimou's Steel Body, completely sustaining Aimou's existence.
Before Aimou's ascension, Belli conducted a comprehensive examination, so thorough that it almost completely disassembled Aimou. Bologue observed the scene like a forensic pathologist dissecting a corpse, with Aimou dismantled to only the basic framework of the core. The head was connected to the mechanical spine, and the cold steel rib cage hung with the heart named the Constant Motion Core.
