My Beautiful Sister and I

Overview

The plan of the incredibly close sisters... is to show what's what to their mother who always was prejudiced against the older sister! "I know very well that a parent's love isn't always equal... but I'm fine as long as I have my little sister with me!" Amanda is plain and always ridiculed when compared to her beautiful younger sister, Adeline. Her parents ignored her and other people's words hurt her... but only at first. After Amanda learned how Adeline truly felt, all Amanda could think about was how to become the best big sister to Adeline as she could be. If she had the time to be hurt, then she could improve herself for Adeline's sake! In other words, she became someone with the mental strength of steel and an obsession with her little sister. Their mother had always irrationally doted on Adeline, so they made a plan to escape her clutches. When they put it into motion... (Source: BisouBisou Comics)

Source: AniList