Have some ideas:

• Lovely Magnet Miku: https://yande.re/post/show/205657/

• Ama no Jaku Gumi: http://danbooru.donmai.us/posts/1037598

• Gumi and Rin: http://danbooru.donmai.us/posts/1285445

• Kagiyama Hina with guns: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=28176715

• fate-girls-in-black.jpg

• http://danbooru.donmai.us/posts/1419736?tags=dango

• Dat Grading: http://nikkijun.blog.163.com/blog/static/10513096201361210736263/

• http://miyoaldy.deviantart.com/art/Vocaloid-2012-Racing-Miku-304573481

• One of Blitz's photos as a backdrop: https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn2/1292135_387612371365839_1644013766_o.jpg

Blood effect brushes:

• http://all-free-download.com/photoshop-brushes/blood_marks_brushes_177946.html

• http://all-free-download.com/photoshop-brushes/shad0ws_blood_brush_set_178027.html

• http://jamesrushforth.deviantart.com/art/Shad0ws-Blood-Brush-Set-19982524