
Quick answer — Yoshimasa Hiraike worked on Wotaku ni Koi wa Muzukashii OVA (Director), Wotakoi: Love is Hard for Otaku (Director), Kaleido Star (Director) and 13 more anime.
Yoshimasa Hiraike worked on Wotaku ni Koi wa Muzukashii OVA (Director), Wotakoi: Love is Hard for Otaku (Director), Kaleido Star (Director), Wagnaria!! (Director), Gugure! Kokkuri-san (Director), Sketchbook ~full color's~ (Director), Excel Saga (Episode Director), Vandread: The Second Stage (Director) and 8 more.