User blog comment:Bluemask/MMD CUP 12 - It's the time of the year/@comment-3076833-20140216185801/@comment-32500188-20140218182827

Kantai Collection (aka Kancolle)... or "just another online card game" for short synopsis. (And Google Translate is still being sucky with some things... "kanjoutachi" that you see in that particular video was supposed to be "Warship Girls" in English.)