Also knows as C3 or Cube×Cursed×Curious
Anyway
is a Japanese light novel series written by Hazuki Minase and illustrated by Sasorigatame about Haruaki Yachi who receives a mysterious black cube from his father. That night, Haruaki is woken by a noise and finds a nude girl named Fear in his kitchen. Haruaki then has to protect Fear from an organization who wants to destroy her. Luckily, Haruaki's friend can transform into a sword. It was adapted into a manga and anime series at the second half of 2011.
[SPOILER="Spoiler"]Watched Episode 1-9, was amazing. Art with the action scenes is magnificent. I highly recommend this series[/SPOILER]
[video=youtube;xqad96ZyzNI]http://www.youtube.com/watch?v=xqad96ZyzNI[/video]
[video=youtube;YIz-s4J1vEY]http://www.youtube.com/watch?v=YIz-s4J1vEY&feature=related[/video]