This took longer than I wanted it to. :/

[hider=Magical Girl. Power: More Dakka][list][*][b]Name:[/b] Yukine Chris
[*][b]Title:[/b]
[*][b]Gender:[/b] Female
[*][b]Appearance:[/b] [url=http://i.imgur.com/2T0XKjx.png]She's not dressed for inclement weather, which could become an issue.[/url] [url=http://i.imgur.com/IEWjXyh.png]Being dressed to fight actually makes it worse but, given she'd be fighting, it would be less noticeable.[/url]
[*][b]Personality:[/b] Due to her rather messed up childhood, Chris isn't the most [i]reasonable[/i] person in the world. She's hot-tempered and coarse to a fault, combining both rudeness and an occasional lack of social graces--for one, you should never take her to a restaurant unless you want something of a mess. On top of that, she's quite prone to overreacting and getting [i]far[/i] too into fights (whether enjoying them or not, tunnel vision is an issue). Yet on the contrary, Chris can be incredibly [i]shy[/i] in normal social situations, being more than willing to put in effort to run away from her classmates at first.
[*][b]Ideals:[/b] Chris wants an end to war and has been willing, in the past, to do some rather questionable things for it... things that came back to bite her (and served a large role in why the moon nearly got destroyed). She's [i]mostly[/i] past the whole atonement phase now.
[*][b]Biography:[/b] Chris's parents were famous singers--her father Japanese, her mother... presumably from somewhere English speaking. When she was a child, they took her along with them on a tour of a country divided by civil war as part of an attempt to help refugees. With the war getting larger, this turned out to be a poor choice and it got them killed. Chris, on the other hand, survived perfectly well--but was now in the hands of terrorists and human traffickers.
Fast forward six years and she was once again in Japan (and free) but on the way to meet her actual legal guardian, she was abducted by Finé and given a fragment of the bow Ichaival, converted into a Symphogear, and used to awaken a complete relic--Solomon's Cane. It was shortly after this that Finé put her plan to use a giant cannon to blow the moon up into action, with Chris being sent to deal with the Symphogear users, using a [i]different[/i] complete relic. Though initially doing well enough, her failure to actually achieve a victory lead to first being punished and later abandoned entirely. Ending up fighting Noise (evil dissolvey monsters) to the point of exhaustion, she would likely have died if not for Kohinata Miku finding her at the right time.
Having returned to Finé's mansion in order to get more answers, she was nearly caught in its explosion--once again saved by someone else and this time an adult. Chris was left with a communicator in case her help was needed or she [i]did[/i] want to trust them, a decision that proved its validity when she was instrumental in taking down a large number of Noise with the other Symphogear users. Shortly thereafter, the moon-destroying cannon was fired and was only stopped by Chris' sacrificing herself to ablate as much of the blast as possible.
Due to singing, she got better in an unreasonably short amount of time.
After the moon crisis, Kazanari Genjuro finally became able to fill the role of her legal guardian and she began working with the other Symphogear users properly, as well as attending Lydian academy. Since then, she has played a part in preventing the collision of the 
Moon and Earth [i]and[/i] a crazed alchemist trying to dissect the planet.
[*][b]Powers:[/b] The only power that Chris has is a high compatibility with the singing-activated relics that form the basis of the Symphogear system. This is actually vitally important: not only can someone with a low compatibility (which is at least better than none) barely do anything without the use of LiNKER to improve things, a high compatibility is needed in order to survive using a Swan Song with [i]just[/i] incapacitating damage.
[*][b]Weapons:[/b] Chris is the wielder of the relic Ichaival, a fragment of Odin's bow fused with modern technology and a piece of the sword Dainsleif in order to be used to safely fight things like the Noise, which would kill any normal person on touch, and later put to use for slightly more mundane purposes like "taking part in a mission to prevent a space shuttle from burning on re-entry". Aside from transforming her clothing when activated and seemingly providing backing music for singing, the Ichaival boosts durability and general physical ability to the level that a non-athletic girl like Chris can jump to the roof of a building or get up from being smashed into a wall like nothing has happened.
It also provides weaponry. A [i]lot[/i] of weaponry, all in the form of ranged weapons. By default, the bracers simply become automatically-reloading homing energy crossbows, which can themselves split more to fire three shots at a time. More often, she simply turns them into a pair of Gatling Guns with infinite ammunition. For more durable targets, there's missiles, missiles that split into more missiles, bigger missiles, shooting a missile arrow from an enormous bow, and what amounts to flak. Only the flak ends up raining down from above. The sole concession to defence or melee fighting it has is a reflector for holding back energy beams and a sniper rifle form that also works to pistol whip someone with (and would presumably fire explosives as well).
The fragment of Dainsleif in the relic allows it to become even stronger... by physically impaling her. Not only is this quite painful, [url=http://i.imgur.com/QtNnaA8.png]plus evil looking[/url], it can potentially drive the wearer to attack like a berserk animal... quite ignoring all the guns she has. Not something to be used lightly.
[*][b]Equipment:[/b] Nothing aside from the Ichaival.
[*][b]Universe of Origin:[/b]  Senki Zesshou Symphogear[/list][/hider]