Hajime's quick draw, Arifureta Vol 2/6/8

Booom! There was another gunshot, but this one decapitated five soldiers at once. Actually, there had been five gunshots, but Hajime fired so fast that their sounds melded together.
...
Hajime knew he couldn’t give her time to rest. And so, he unholstered Donner and Schlag and fired a follow-up barrage at her.
There were two loud explosions as two streaks of red shot toward Noint.
Though Noint saw only two streaks, twelve bullets slammed into the swords she’d held up to guard her vitals.
“Gaaah!”
Hajime had fired so fast and so accurately that each bullet had followed the exact same path at almost the same time, which was why it had appeared at first to only be two shots.
...
A barrage of red streaks filled the air. It was as if a meteor shower had suddenly passed them by. Seconds later, a series of dull explosions sounded in the distance. After each explosion, another six streaks of light shot past. It was as if the bee-things were beset by a horde of crimson spears.
Each streak of light shot through a monster without fail. This was one of Hajime’s gun kata skills, Ultra-Fast Quick Draw. He fired so fast that each round of six bullets had only one gunshot noise accompanying it.