Adding borrowed character because this girl is from aimisu_u's Jojoni Deremi ga Mashiteku Tsundere Gyaru (徐々にデレ味が増してくツンデレギャル) series. The English title scanlations use is A Tsundere Gal Is Becoming Cuter Day by Day and The Tsundere Gal Whose Dere Side Gradually Increases.

First Chapter