Behold, my [i]totally original[/i] contract monster.

Human:
*Name: Momo Ibuki
*Age: 17
*Appearance: [url=http://moerin-satsuki.deviantart.com/art/Moerange-Arms-405748536]Whee[/url].
*Personality: Hammy, silly and something of a perv, with a notable love of boyish girls and girlish boys. Refuses to act her age most of the time, but when she does it's usually a bad sign. She has a strong sense of justice, and is quick to jump to the defence of anyone she feels has been wronged, but other than that she's kinda lazy. She's also kind of a nerd, and enjoys cooking, reading and random bouts of philosophy. Unfortunately, she also suffers from an inferiority complex and tends to put everyone else before herself, and has a habit of apologising far too much when she believes she has done something wrong. She often finds herself frustrated and infuriated by her partner Jin, and wishes she could make another contract so at least she had more options than "hit things [i]really[/i] hard".
*Clubs: Cooking Club
*Brief Backstory: Really, there's not been much of note in Momo's life until just recently, when she finally made her first ever contract. Unfortunately, rather than getting something she could actually work with, she got a loudmouthed, arrogant oni. Since then, Momo has been constantly at blows with Jin, to the point that she is currently looking to make another contract.
*Contract(s): Jingisukan the Oni

Contracted Beings:
*Name: Jingisukan (or just "Jin")
*Type: Oni
*Personality: Prideful, boastful, somewhat arrogant and above all [i]immensely[/i] hotblooded; Jin has no indoor voice. He's also very enthusiastic about fighting, although this is less from him wanting to cause general mayhem and chaos and more from him wanting to prove that he's the best. He has a habit of giving nicknames to everyone he meets, partially to mock them for not being as awesome as he is but mostly because he can never seem to remember their names. Jin happens to be a great lover of coffee, which is unfortunate for his host who absolutely hates the stuff; often the first thing she does whenever he depossesses her is gag on the taste of coffee. Not only that but as an oni he is rather fond of his alcohol; again, something his host is not too keen on. It has no real effect on Jin, but Momo still has a hangover afterwards...
*Powers: Contracting with Jin has granted Momo great physical strength that just slightly breaks the threshold of superhuman. That's about it, really.
*Fusion: [i][url=http://moerin-satsuki.deviantart.com/art/Moemotaros-408666448]"I... Have arrived!"[/url][/i] And yes, the scarf and the Kamen Rider Den-O t-shirt are part of the transformation. Jingisukan grants Momo vast levels of superhuman strength when they are fused, enough to lift cars above her head with no visible strain, or to uproot sizable trees and use them as clubs. In addition, she gains the ability to summon small storm clouds and ride them through the sky.
*Summon: [url=http://images4.wikia.nocookie.net/__cb20091118140156/kamenrider/images/c/c3/Den-O-Momotaros2.jpg]Totally original, I know![/url] Really, there's not much difference between fused Jin and summoned Jin in terms of abilities, other than the fact that he comes with a [url=http://i.imgur.com/lufwEJr.jpg]sword baring his likeness[/url]. He's also [i]even stronger[/i] and can also fire lightning from his hands, but unfortunately his strength is so great that he causes far too much collatoral damage, and thus Momo rarely if ever summons him, prefering the more controllable level of strength gained from fusion.