Oops. Been lazy and now there are only two weeks left for this indiegogo/one of many Japanese crowdfunding sites campaign (hope this is kosher for the forums):
From their own write-up: In April 2011, KAO=S was founded in Tokyo with Kaori Kawabuchi (Vocals / Sword Dance), Shuji Yamagiri (Acoustic Guitar / Vocals) and Jack (Tsugaru Shamisen). Out of the chaos that followed the 2011 Tōhoku earthquake, the band distilled a new style of Japanese art to bring to the world. And they named band “chaos”→“KAO=S”.
KAO=S combine Japanese traditional elements and modern Rock music, with musical theatre. Their sound is a blend of twin vocals and heavy acoustic guitar, overlaid with traditional Japanese instruments Tsugaru-Shamisen, using a full range of effects. And lead singer Kaori is called as “Lady Samurai” performs spellbindingly powerful sword dance. KAO=S quickly caught people’s attention.
They've done shows across Japan, at SXSW (they got a short video about them on CNN during one visit too) and in South America. They've also performed with a host of Japanese indie wrestlers on the Fighting Musical Makai show. Kaori has even been on KUNOICHI (she got cut, unfortunately) and has been a motion capture model for several games, including the main character of Nier: Automata
Anyway, if you like their stuff please support them if you can!