In the September issue of Kadokawa’s Young Ace magazine, it has recently published the final chapter of Puyo’s manga series titled “The Disappearance of Nagato Yuki-chan”. The spinoff manga series based off of The Melancholy of Haruhi Suzumiya series will also release its 10th and final compiled book in February 2017. The series first began being published in Kadokawa’s Young Ace in 2009, and the 9th compiled volume will be releasing with an anime original Blu-ray Disc on October 26th, the 7th compiled manga volume release din North America on March 24th. There would later be an anime adaption for the series released which started on April 4th 2015 and would end July 18th 2015 releasing a total of 16 episodes. The series plot summary can be seen below quoted from MAL:
Nagato Yuki, the shy president of the literature club, has never been very sure of herself around other people. But around Kyon, the only boy in the tiny, three-person club, Yuki finds herself faltering even more than usual. For Kyon, and for her precious club, Yuki must find her confidence and let her true personality shine!