Zero.

Summary

In the story, Zero feigns sleep while secretly hacking hotel surveillance. He overhears a conversation about his potential recruitment into a sect. After a tense encounter in an alley where he saves a girl from two thugs, a beautiful fairy intervenes and freezes the attackers. Zero, desperate to learn magic for revenge, pleads to become her disciple. The fairy agrees to test his aptitude and takes him to a hidden passage leading to a hall with stone doors. She kneels before a distinct purple door, and they are summoned inside by a distant voice, indicating a significant turn in Zero's journey.

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