No Matter How I Look at It, It’s You Guys' Fault I’m Not Popular! (Japanese: 私がモテないのはどう考えてもお前らが悪い! Hepburn: Watashi ga Motenai no wa Dō Kangaetemo Omaera ga Warui!), commonly referred to as WataMote (ワタモテ), is a Japanese manga series written and illustrated by Nico Tanigawa (ja). It began serialization on Square Enix's Gangan Comics Online service from August 4, 2011 and is published by Yen Press in North America. A 4-panel spin-off manga was serialized in Gangan Joker between January 2013 and July 2015. An anime television adaptation by Silver Link aired in Japan between July and September 2013. The anime adaptation received critical acclaim, particularly for the portrayal of the main character, but was also controversial in its treatment of social anxiety.
Free source: http://watamote.com/
Finally I found someone who posted about this! I really love this series and even the manga. Somehow I can relate to Kuroki in some of her scenes especially when interacting with other people.