, also known as S.S.D.FANTASICA, is a freelancer composer. He has contributed music as a video game music composer for the Bemani division, but also video games published by Nintendo such as the Super Smash Bros. series, or developed by Chunsoft like the Pokémon crossover of the Mystery Dungeon franchise and the Kamaitachi no Yoru series.
Iiyoshi is currently working as a sound designer, including composing soundtracks and sound effects.
In the past, he was trained at Naomi Career Center in Japan. After graduating, he has worked with other companies, including D-MAC Records, before becoming a freelancer.