This single became her first major work of Suzuki since 2000's "Reality/Dancin' in Hip-Hop". The song "Delightful" was produced by German trance musician Axel Konrad, giving to it a marked eurodance influence. Since her return to a major company, "Delightful" was the only single to get into the Top 3 of the Oricon charts, and it has become Ami Suzuki's signature song of her new era in the Avex company. Since its release the song has become her strong points along with "Be Together" when performing live in music festivals and public events, one of the most remarkably being the yearly Japan nationwide tour organized by Avex, A-Nation.
The single debuted at number two in the Oricon daily charts. At the end of its first week it managed to get at the third spot, selling 41,936. After twelve weeks in the charts, "Delightful" ended up selling 97,218 copies.