Urusei Yatsura
Overview
Ran purchases a pouch of heart candies that cause a heart to appear over whoever eats one who becomes entirely devoted to the person who grabs that heart and tries to use them with Rei only to fail. The candies then fall in the hands of Lum who eats one and it quickly becomes obvious to her lovestruck male classmates at school that the one who grabs the heart over her head will win her unquestioning devotion while Ataru tries to use those candies to get the other girls’ devotions.