Peter
Nox and Akuma, you both had mysteriously received a letter asking for your services in 'dealing' with some individuals that had cheated the sender. Nothing else is known, not even the name of said employer. Alas, it would seem you two aren't so picky as to refuse simple work for good pay. 
Both of you would wander the streets for a while, but after asking a few questions here and there, you both would find yourself at Frogcroak alley. The sun doesn't reach inside, creating a rather shady atmosphere. True to its name, you can hear frogs creaking from the nearby sewer entrances. You both would arrive around the same time, and are the only two in the alley way. Conveniently the nearby streets are somewhat empty with no guards in sight, an ideal environment for illegal dealings. You two still have a couple of minutes or so before it is noon.
Herbert
In front of the froggy alley, a white haired man, his form casting a shadow with the sun on his back, glances at the alley walls. It was strange. Why the croaks? Disregarding the issue of frogs living in the sewers, the red oni stretches up, wondering what could possibly be here. It just seemed like a normal alley. It was gloomy, yes, but that didn't particularly set it apart from normal alleys. 

The Oni's human form was about 190 cm tall, and grew red, angry horns from its forehead. One seemed to have been cut to a stump. Various scars decorate his face and skin, some major ones snaking across his nose and right forehand. Although not too visible under his woolen clothes in the wintertime, the Oni also had a dragon-shaped tattoo twirling around his arms. He was definitely a wild one.
William
*On the opposite side of the alleyway , a mage dressed in all black robes stepped into the arena. His face was obscured with a bone mask, with blood markings and glowing runes dancing across it. He held nothing in his hands, yet it was clear the atmosphere around him was nothing short of terrifying. In a small radius around him, the frogs stopped croaking, almost as if they had felt his presence. If one could see under his mask, one could se that he was disgusted. Vermin. Pest. Scum. He thought to himself*
Peter
A couple minutes pass as you two continue to wait in the alley. Still no one in sight. Perhaps this was a joke? However, you both then notice a frog hop on over toward the two of you. It looks up at you with intelligence in its eyes. It then open its mouth
"Glad you two could make it. Seeing that you two are here, I can only assume you have accepted the job. The boss apologizes for not meeting you in person, but I'm sure you understand that in this kind of work confidentiality is valuable. But enough, small talk."
The frog then slowly transforms into a tall yet slim humanoid figure wearing dark robes and a hood that completely covers his face. 
"This is a rather simple job. There is a man who purchased some herbs from the boss. They were rather expensive, so understandably the boss gave him a week to pay it back. The payment wasn't received. When asked, the man pleaded for another week. The boss is very kind and a believer of 2nd chances, so he agreed. A week passed and payment was still not received. When we tried to contact the man it was found out that he foolishly fled. Needless to say, we tracked him down, and now want him to be dealt with. He is in a hut in the wilds. Here is a map with his location marked. Everyone in there is guilty, so no need to hold back. I will also be accompanying you all as an observer. Any questions?"
Herbert
As the frog started to speak, the scarred man widens his eyes, quite astonished by a frog talking. You really had to expect the unexpected in a world of magic. Akuma might as well have been completely blindsided. Then, as the frog morphs into a man, Akuma understands that it was probably transformation magic, or a racial quirk. As the frog asks if he had any questions, Akuma shakes his head. This sounded like it was going to be a simple job. Go in, kill a man, then walk out. Perhaps others would have moral qualms about this, but as long as he didn't have to kill a child, an old man, or a defenseless woman, the Oni was fine with this. He had honor, after all. The mage could do the dirty work if he wanted to.
William
When the frog spoke, Nox assumed that his employer was scrying through the frog, which to his own experience, took a great amount of power and concentration. However, that would also mean that he was nearby. As the frog transforms, Nox merely nodded is silent disapproval. Easy pickings, he thought to himself. Of late, his ability to control his own anger suffered and this would be an excellent way of venting his frustrations. A lone hut in the forest? Even better. Nosurvivers, no witnesses he thought.
Peter
The man nods "Good. Then I shall see you there. Try to keep out of sight while leaving the city. The fewer traces the better"
The man then steps into the alleyway's shadows and before your very eyes he seemingly disappears.