Mikan Yuuki is a key character from the anime series "To Love-Ru." She is the younger sister of the protagonist, Rito Yuuki. Mikan is known for her mature and responsible nature, often taking on household duties and looking after her older brother. Despite her young age, she displays a sharp wit and intelligence, frequently offering advice to Rito. Her caring and supportive demeanor make her a beloved character in the series, as she navigates the complexities of adolescence while dealing with the chaotic events surrounding her brother's life.