[b]Human[/b]:
Name: Kasuga Mira
Age: 16("Yes, sixteen!")
Appearance: [url=http://imgur.com/HEzsyXT]"... Who are you calling a little girl?! Let's dance!"[/url]
Personality: Mira is... the best way to explain her behavior would be to say she's kind of surly. Mira has a tendency to snap, or complain, or generally be grumpy about most situations. That said, she's not without her happier times, but she's quick to anger and very quick to complain. Normally she's at her happiest if she's shown direct approval or affection(though she's unlikely to directly admit it), or if things are going her way. She very intentionally projects a strong image to compensate for her tiny appearance, and has no qualms with... physical methods of correction if someone ticks her off enough. Mira has a passion for cakes, and while she doesn't entirely mind her body, she will not hesitate to point out that she's actually seventeen and she should not be called a child. She is a very capable, straight-laced student who takes her work with the utmost seriousness. Among the things she takes very seriously is martial arts, taught to her by her father.
Clubs: The Martial Arts Club, the Light Music Club(Guitar)
Brief Backstory: The daughter of a French summoner and a Japanese martial artist, Mira has learned from both(getting a black belt in the process) and developed into a stern and serious girl who dislikes nonsense. A stern and serious girl who dislikes nonsense who has... remained small for her age.
Contract(s): Lily
 
[b]Contracted Beings[/b]:
Name: Lily
Type: Demon
Personality: Lily likes to describe herself as a perfect example of a demon. Not the evil ones, the mischief-makers. She loves to mess with people and tease them, and generally fool around. Lily is also a tremendous pervert of massive levels, which she especially likes to use to mess around with poor Mira. She likes to flaunt her body, which is why the clothing she wears is rather revealing. She also likes perving on and messing with... just about anyone she finds cute whatsoever, much to Mira's utter dismay. She also thinks Mira needs encouragement to let loose and be kind of pervy. Mira feels this is stupid and Lily is stupid for thinking it.
Powers: Demonic strength and some additional durability. That's... about it, really. Coupled with Mira's small size and martial arts expertise this is pretty dangerous, though.
Fusion: [url=http://safebooru.org//samples/889/sample_96af82d10f2e5f8ec60ce536bdec1114767b99c2.png?894758] "Oh, don't you like getting a 'boost' like this~?" "Sh-shut up!"[/url]
Mira grows taller and more... mature. She can also hover for brief periods using her wings and use her tail to grab small objects. She retains her demonic strength and durability, and gains a minor healing factor(broken bones and severed fingers, for example). Unfortunately for Mira, Lily often takes control and tries to do somewhat perverted things using her body. This makes Mira very very reluctant to fuse with Lily.
Summon: [url=http://safebooru.org//samples/542/sample_144e6d974eca57c2795f01f40ab80266dcf63743.jpg?544528] "Ah, it's nice to get out and stretch my limbs~"[/url]
Lily is of average demonic strength, capable of easily outdoing a grown man but having trouble dealing with other summons through strength alone. Lily is capable of complete and free flight, and her tail is remarkably strong and can be used to pick things up or hit them. She can unrestrictedly produce and hurl balls of hellfire, extremely intense flames capable of melting even steel. Lily can also regenerate some injuries(up until severed limbs. Serious harm to her body is not possible for her to heal) and take quite a beating.

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[b]Human[/b]:
Name: Tomoe Sakura
Age: 17
Appearance: [url=http://safebooru.org//images/505/1743f2e2a11bf467a5b9165786ca9d2c4eb86d28.jpg?507305]"Oh, hello there, would you like to play a game?"[/url]
Personality: Sakura is a pleasant, if sometimes teasing, girl with a penchant for games. Games of all sorts, really. She enjoys video games, card games, and board games equally. She tends towards being polite, unless she's decided to tease someone. Teasing is, however, generally a sign that she likes a person. She avoids being too harsh when she teases, and all her kidding around is very good-natured. Actual anger is marked by very direct and sharp, angry comments, or silence. Basically, if she's teasing someone, she's not angry with them in the slightest.
Brief Backstory:
Contract(s): Artemis

[b]Contracted Being[/b]:
Name: Artemis
Type: Goddess
Powers: Sakura gains excellent eyesight, increased endurance and reflexes, and excellent marksmanship.
Personality: Artemis is serious-minded and calm... most of the time. She is prone to making biting, sarcastic comments to those she perceives as idiots, and has little to no tolerance for stupidity or fooling around. She takes a great deal of pride in her abilities as an archer and a hunter, and sometimes boasts that she has perfect aim. Which isn't really a boast, as her aim is beyond fantastic. Enough irritation will drive Artemis to yell and insult the source, berating them rather relentlessly. She does show softness towards young girls... provided they don't act stupid, too. She is extremely, absurdly protective of Sakura, holding Sakura's protection as an important duty of hers.
Fusion: The fusion between Sakura and Artemis is closest to Sakura. However, Sakura is clad in Artemis' clothing, and her hair has changed to the same shade of purple as Artemis'. In this state, Sakura gains the godly speed and strength of Artemis in full. It also enables her to run. She gains Artemis' skill with a bow and arrow.
Summon: [url=http://danbooru.donmai.us/post/show/104376/1girl-armor-boots-bow_-weapon-hat-long_hair-origin]"Four targets...?"[/url]
Artemis is divinely strong. But she is weak by comparison to other gods, instead relying on agility and speed(also to divine levels, though she is not the fastest deity). However, her real abilities lie in what she can do with her bow and arrows. Curving arrows, firing them through walls, rapid-firing them, aim so impossibly near perfect that she nearly always hits her target unless they have abilities to match her own, firing dozens of arrows at once, Artemis is a master of archery. She is also capable of, oddly, turning men into young girls. The latter of these abilities is not something she's going to use pretty much ever.