This yes comes from Elementar Rising 6. I have all the stories written out and what not with bosses and recently had gone over this song again. Yeah I lazy tweened Chi Madoki there but it gave one of those breathing effects I guess with the picture.
Chi Madoki comes from Elementar Rising 6 of course and is a doll made from the body of Chi who was dying of an odd illness. Thanks to Musadore Yoko however her emotions were set to that of sadness. The sadness adds to her negative blaster like gun which gets more powerful based on the tears she sheds. Her point in the series is pretty tragic but I won't spoil you on any other details unless you want.
The area she's found in however is an old run down Kaos laboratory. Fitting for something sad I think. I'm so cruel at times. Anyways hope you guys enjoy the music. Violins really helped this out I think.