The Timelock Key event's Shadowed Past 'Memories' passage depicts Sylus and an unnamed companion standing face-to-face inside what appears to be a gladiator cage. They swear a mutual vow: 'We'll escape this place together.' The wiki does not confirm the partner is MC; fan readings vary. This may predate or coincide with the Tartarus escape. The sequence is allegorical rather than a literal scene.