Quick answer — Masahiro Fujii worked on Nodame Cantabile (Key Animation), The Pet Girl of Sakurasou (Character Design), Hayate the Combat Butler!! (Character Design) and 14 more anime.
Masahiro Fujii worked on Nodame Cantabile (Key Animation), The Pet Girl of Sakurasou (Character Design), Hayate the Combat Butler!! (Character Design), One-Punch Man Season 2 OVA (Animation Director), The Familiar of Zero F (Character Design), The Familiar of Zero: Knight of the Twin Moons (Character Design), Hayate no Gotoku!!: Atsu ga Natsuize - Mizugi-hen! (Character Design), SHIMONETA: A Boring World Where the Concept of Dirty Jokes Doesn’t Exist (Character Design) and 9 more.