Listen to the sound clip Bilal never acquired reversed cursed technique. But the infinite amount of cursed energy flowing in Bilals body made him do reversed cursed technique. In other words in the next 4m 11s hes locked in from Chrollo Lucifer (Hunter X Hunter) (Latino) (V.1) TTS Computer AI Voice:

This sound is from Chrollo Lucifer (Hunter X Hunter) (Latino) (V.1) TTS Computer AI Voice

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