Shiwa (Manga)

is a Japanese manga series illustrated by Mogelatte. The manga was serialized in the Comic@Loid magazine and published in Japan by ASCII Media Works under the Dengeki Comics NEXT imprint from June 2013. It is based on the vocaloid song of the same name by BuzzG.

Synopsis
Based on the BuzzG's famous Vocaloid song Shiwa, Chiharu isn't a girl who sees the point in things like romance. To her boys are just an annoyance, but what will she do when she starts to develop feelings for a boy at her school?

(Source: MangaHelpers)