Woefully under prepared!

"Well then, try and give the girl a call!" Issei pressured the guy, who spluttered.

"Right now?" he asked, and Issei nodded.

"Of course! You gotta show off your new spine, right? And once you're done, I'm going to need you to fill out this survey, as well as render payment. A small fee should do," he added.

"...Devils have paperwork?" the guy asked, and Issei laughed at that.

"...we're Devils. Beings commonly associated with Hell," he told his client. "OF COURSE there's paperwork!" he joked, which got a laugh from the nervous guy.

"You got me there!" he admitted. He started to dig out his phone, when Issei sensed something, and his instincts told him to move to the side, and he immediately obliged them... A searing pain lanced up his arm as a beam of light grazed it, and he cried out. The sudden attack would have gone through his back had he not managed to move.

"Feh, shitty Devil and shitty sinner," the assailant noted, emerging from the doorway that led upstairs, holding a gun.

"What the-!? What are you doing in my house!?" Issei's client demanded, taking a step back as the guy who had attacked Issei cackled madly.

"Is it not obvious why I'm here, you damn sinner?" he sneered like he was addressing something on his boot. "I'm an exorcist, and am here to stamp out the evil of Devils, and any sinner who dares to empower them by making pacts with them!"

Issei paled, and frantically recalled the warning Rias had given him about exorcists. This was bad, very bad! How could he get out of this? He wasn't prepared to fight against an enemy with clear combat training, and weapons clearly meant to kill Devils!