The Disappearance of Nagato Yuki-chan is a spin-off manga in The Melancholy of Haruhi Suzumiya franchise, where it stars the eponymous character Yuki Nagato. The series takes place in the alternate universe established in The Disappearance of Haruhi Suzumiya. The series is drawn by Puyo with the story by series creator himself Nagaru Tanigawa, and started in February 2010. To date, the series has a total of 5 volumes with the 6th volume releasing on December 26th this year.
There is very little information regarding the anime announcement of The Disappearance of Nagato Yuki-chan, including whether or no Kyoto Animation will produce it. In regards to the franchise, the last light novel was released in 2011, with the english localisation releasing last month, which was published by Kadokawa Shoten who also own the licence to the franchise.
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“The Disappearance of Nagato Yuki-chan”, “The Melancholy of Haruhi Suzumiya”, images and all associated brands and titles © 2013 Nagaru Tanigawa, Noizi Ito and Puyo