"Silence is the best way to face the unknown."
Faced with a world that was difficult to integrate into, she chose silence. Observe and imitate at the same time. All her actions are in search of an answer to her mother's disappearance.
There have been many companions around me, but they have never felt like friends.
The only person she felt close to was a Class A criminal.
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One-sentence summary: The heroine is involved in a thousand-year mystery in the process of finding her mother. She keeps meeting and getting separated from Chrollo in the gap between reincarnation and the law of cause and effect.