Heart of the Girl

is a japanese 4-koma manga series written by Oku Tamamushi. It began serialisation in the June 2015 issue of Manga Time Kirara Miracle.

The series was released under 2 volumes from February 2016 to November 2016.

Synopsis
The mysterious game “Heart of the Girl.” A game where in the real world, girls are rated by their ‘rarity’. Will Nozomi be able to clear her former best friend, Kakoi? Find out in this heart-racing story of love and skirt-chasing!

(Source: Manga Updates)