Yui Kotegawa is a fictional character from the anime and manga series To Love-Ru. She is known for her serious demeanor and strong sense of justice, often acting as a voice of reason among her friends. Yui is a high school student who is also a member of the student council, showcasing her leadership qualities. Yui has a distinctive appearance, characterized by her long black hair and glasses. Throughout the series, she often finds herself in comedic situations due to the antics of her classmates, particularly Rito Yuuki, the main protagonist. Her character adds depth to the storyline, balancing humor with her responsible nature.