The Guardian

Every prisoner at Fall Hill Prison had the opportunity to improve their conditions of sentence. To do so, they had to do something very simple - move to the next zone.

However, to do so, they had to defeat the Guardian - K1-Phantom from Azure Lotus, given that the prisoner didn't have his Nexus. This made the challenge much more difficult.

Thus, if the prisoner from the second floor and the Guardian were normally equal in strength, then without his Nexus, the prisoner had no chance of winning. The Nexus was an important pillar of Phantom's strength, and losing such a powerful weapon was critical. 

Step. Step. Step.

A girl in a blue military suit stepped forward confidently, holding a huge black case. She had azure eyes, a firm, sharp gaze, and black hair with curls down to her chin. 

She walked through the gate, looked at the prisoners, and jumped down.