Quick answer — Ponkan 8 worked on My Teen Romantic Comedy SNAFU Climax! (Original Character Design), My Teen Romantic Comedy SNAFU TOO! (Original Character Design), SHIROBAKO (Original Character Design) and 6 more anime.
Ponkan 8 worked on My Teen Romantic Comedy SNAFU Climax! (Original Character Design), My Teen Romantic Comedy SNAFU TOO! (Original Character Design), SHIROBAKO (Original Character Design), My Teen Romantic Comedy SNAFU (Original Character Design), My Teen Romantic Comedy SNAFU TOO! OVA (Original Character Design), Yahari Ore no Seishun Love Come wa Machigatteiru. Kan: Dakara, Shishunki wa Owarazu ni, Seishun wa Tsuzuiteiku. (Original Character Design), SHIROBAKO the Movie (Original Character Design), My Teen Romantic Comedy SNAFU OVA (Original Character Design) and 1 more.