Rikako Kakiuchi , professionally known by her stage name Rina Aiuchi and formerly known as R, is a Japanese singer, songwriter, businesswoman, fashion model, and YouTube content creator. Born in Higashiōsaka, Japan, she won the first season of the audition Super Starlight Contest, winning a recording contract with Giza Studio. Her Eurobeat-influenced debut album, Be Happy (2001) was certified Gold in Japan and spawned a top-five single, "Koi wa Thrill, Shock, Suspense," which served as the theme song to the anime series Case Closed. Aiuchi's second album Power of Words became her best-selling album. It sold over 419,000 copies nationwide and was certified Platinum in Japan.