Mizushima is known for directing various anime series, such as Slayers Next, Generator Gawl, UN-GO, Dai-Guard, Shaman King, the 2003 anime series of Fullmetal Alchemist, Oh! Edo Rocket, Mobile Suit Gundam 00, Hanamaru Kindergarten, Zaion: I Wish You Were Here, and the first ever anime collaboration between Sunrise and Aniplex that just beat Valvrave the Liberator's flank on being the first, Natsuiro Kiseki. However, he is currently directing BlazBlue: Alter Memory as in his collaborative position with the anime's director Hideki Tachibana and Expelled from Paradise, a collaboration between Nitroplus and Toei Animation written by Gen Urobuchi, the David S. Goyer of anime.
Sorry about the info. ~NI97
For the Harmony Unleashed franchise, he directs a few episodes from Harmony Unleashed: Human Ponidox Continuum Shift and now he will be the director of Harmony Unleashed: Jaegermeisters, a collaboration between Production I.G and Hollowfox Entertainment.