This is probably one of the most popular Dir en Grey costumes out there, Toshiya's outfit from the "Myaku" video. I counted at least two different versions of this costume, the one worn in the video itself (which had leather buckles on the O-ring arrangement on the belt) and at least one worn for photo shoots (which replaced the leather buckles with fabric straps). This is a hybrid of the two, with a few touches of my own. I used the fabric straps on the obi.
The main dress is an asymmetrical wrap design. For the black trim, I used strips of black organza and black pleather. The obi is also made of black pleather, heavily interfaced (but not quite heavily enough) and in two parts; the bow is separate.
For the record, "Myaku" gives me a headache.
I do not compete.