The Young Master's Revenge

The Young Master's Revenge (君のコトなど絶対に, Kimi no Koto nado Zettai ni) is a shojo manga by Meca Tanaka. It ran in the LaLa monthly manga anthology from August 2014 to July 2017. It is complete in four volumes. Viz Media has licensed it for English release.

Plot
When Leo was a young boy, he had his pride torn to shreds by Tenma, a girl from a wealthy background who was always getting him into trouble. Now, after years spent overseas, his father’s successful clothing business has made him the heir to a fortune. Leo decides to search out Tenma to enact a dastardly plan: he’ll get his revenge by making her fall in love with him! But a lot of things have changed in the years since, including Tenma herself.

Official
Official English site