"EXR112 Anti-Behemoth test 14!" Tenshi yelled towards his fellow engineers, they were all running in all sorts of directions, kicking up previous debris in their wake. The Incubus strolled over towards an almost oversized gun balanced on top of a tripod. He lifted it with moderate ease, which normal humans wound definitely have trouble with, Tenshi aimed down the scope with a smile on his face, he pulled down protective tinted goggles over his eyes; meanwhile Roseaver was stood a few meters away from the demon. Tenshi, arose aver and the engineers seemed to be in a fairly expansive room, possibly underground, hangars and chains from the ceiling with prototype weaponry hanging from them. It was well lit, burning braziers were dotted almost everywhere. Tenshi fidgeted his feet to get into the correct position, whilst also doing quite a bit of fingerwork to get the kinks of the powerful weapon into the correct status, feeling the heavy trigger with his index finger, dark blasting powder wiped off onto his delicate fingers from the metal. He ascended the weapon and focused it towards a hunk of metal, possibly a decommissioned project deemed useless, nonetheless it is now serving its purpose as target practice. 

"First handheld attempt, wish me luck." Tenshi turned his head and looked over his shoulder and gave a meek smile to Roseaver. He turned back to his previous position before yelling " Firing in three... two... one!" He pulled the trigger, as a visible shock wave made its way out of the end of the barrel, an echoing and deafening blast was emitted. Tenshi was sent backwards flying into Roseaver's chest as he too was pushed backwards before they both collapsed backwards onto the floor, whilst the gun itself was thrown quite a distance across the floor. Roseaver gave an audible groan as he was winded whilst Tenshi sat up, almost sitting on the vampire's stomach as he gazed at the result; the target was completely obliterated, now nothing more than a pile of melted metal. A massive grin formed on his face as he lifted the goggles, as well as wiping off black substance marks off his face, two visibly clean circles where his eyes were protected from gunpowder markings. His fangs showed as his smile grew, "YES!! Precise!" He wailed with his light voice as he brushed his red messy hair out of the way. "Guh.. uhh, Tenshi?" A voice came from below, Roseaver was still being sat on my the destructive Incubus. "Oh! Sorry!" Tenshi immediately jumped up, taking a quick scan of Roseaver before looking back at the hunk of molten junk that had just been annihilated. The vampire stood directly next to Tenshi to take a gander, he was still dazed, meanwhile Tenshi was clapping his hands and almost bouncing up and down in joy, still with a smile on his face. Roseaver's eyes widened as he said, " Bloody hell... Behemoths stand no chance, I'm rather impressed." He gave a crooked smile while ruffling the demon's hair. This immense weapon was crafted solely for taking down Behemoths, and not for anything else, right?