Quick answer — Seiki Takuno worked on Poco's Udon World (Director), Boarding School Juliet (Director), Yamada and the Seven Witches (Director) and 5 more anime.
Seiki Takuno worked on Poco's Udon World (Director), Boarding School Juliet (Director), Yamada and the Seven Witches (Director), Yamada and the Seven Witches (OVA) (Director), LOVE and LIES (Director), LOVE and LIES OVA (Director), Sekko Boys (Director), Farewell, My Dear Cramer (Director).
