Rui Saotome is a main character from the multimedia project and anime series Sousai Shoujo Teien. She is known for her calm and intelligent demeanor, often acting as the voice of reason among her friends. Rui is highly dedicated to her studies and has a passion for science, which makes her a reliable and supportive companion. Throughout the series, Rui plays a crucial role in guiding the group through challenges, showcasing her leadership skills and caring nature.