Polygun Rebound, Arifureta Vol 2/8/10

However... Bang! Hajime’s bullet flew between a Haulia’s legs, ricocheted off a nearby root, and hit Shea right in the butt.
“Hakyun!” This was just one of Hajime’s many sniping skills. By ricocheting bullets off of various surfaces, he could attack from any angle.
And so, he could accurately aim for Shea’s butt no matter where she hid. It was a completely pointless gun skill that had no wasted movements to it.
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He fired so fast that each round of six bullets had only one gunshot noise accompanying it. Furthermore, he’d perfectly calculated all the angles of his shots, so that occasionally his bullets ran into each other and ricocheted off to hit other monsters with perfect accuracy as well.
Incidentally, that happened to be another one of Hajime’s gun-kata skills, Polygon Rebound. To an observer, it looked almost like the enemies were themselves willingly jumping into the bullets’ paths.
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By utilizing the uneven terrain, Hajime had accurately bounced his bullets so they’d pierce through the gaps in Kouki’s armor and shatter one of his kneecaps.