Arata Iiyoshi (飯吉 新, Iiyoshi Arata), also known as S.S.D.FANTASICA, is a freelancer composer. He has contributed songs as a video game music composer for the Bemani division, from video games published by Nintendo such as the Super Smash Bros. series or developed by Chunsoft like the Pokémon crossover of the Mystery Dungeon series and the Kamaitachi no Yoru series.