A punishing fusion of electricity and machine energy wielded by Viluy of the Witches 5. The technique releases swarms of nanobots that gnaw a victim down to nothing but the soul, and it recurs across the manga, the first anime, Crystal, and the stage musicals.
Ranked as a remarkably powerful strike, this technique blends raw electric current with technological force. It belongs to Viluy, a member of the Witches 5, and turns up across several tellings of the story, including the original manga, the first animated series, Crystal, and the Sera Myu productions. In the printed version she first turns it on Sailor Mercury after the Guardian counters with Mercury Aqua Mirage.
Its core function is to loose a cloud of nanobots that consume their prey by degrees, leaving behind only the soul, which the anime renders as the pure heart. In that version a worn electronic bracelet activates the swarm, and once the device is broken the machines turn against Viluy herself, dismantling her until nothing at all remains. The Crystal rendition raises a barrier around the targeted Guardian to seal off any escape as the microscopic robots begin their work.
Viluy of the Witches 5 is the sole practitioner of the move. The anime version has her rely on the Nanocuff to command the swarm. On stage, the maneuver debuts in the musical Mugen Gakuen, Mistress Labyrinth, where she uses it to knock Sailor Mercury off her feet.

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Viluy of the Witches Five uses the Mosaic Buster, and she is the only character to wield it across the franchise.
The Mosaic Buster unleashes a swarm of nanobots that consume the target piece by piece, leaving behind only their soul, which the anime portrays as their pure heart.
In the anime, Viluy activates the Mosaic Buster through a device called the Nanocuff worn on her wrist. If the Nanocuff is broken, the nanobots turn on Viluy herself and dismantle her completely.
In the manga, Viluy first uses the Mosaic Buster on Sailor Mercury after the Guardian counters with Mercury Aqua Mirage.
Yes, the Mosaic Buster also appears in Sailor Moon Crystal, where it traps the target inside a barrier as the nanobots work, and on stage in the musical Mugen Gakuen, Mistress Labyrinth.
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