Chelcy

is a japanese 4-koma manga series written by Shiba Yuusuke. It began serialisation in the October 2008 issue of Manga Time Kirara Carat.

The series was released under 2 volumes from November 2009 to September 2010.

Synopsis
A high school girl who fell in love with laughter appeared !! Yuki Yoshimizu, a high school girl who was having a boring day, decided to do "laughter" one day!

(source: Amazon JP - Translated)