Quick answer — Maki Saitou worked on That Time I Got Reincarnated as a Slime Season 2 (Color Design), That Time I Got Reincarnated as a Slime Season 2 Part 2 (Color Design), That Time I Got Reincarnated as a Slime Season 4 (Color Design) and 9 more anime.
Maki Saitou worked on That Time I Got Reincarnated as a Slime Season 2 (Color Design), That Time I Got Reincarnated as a Slime Season 2 Part 2 (Color Design), That Time I Got Reincarnated as a Slime Season 4 (Color Design), That Time I Got Reincarnated as a Slime: Visions of Coleus (Color Design), That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea (Color Design), The Slime Diaries (Color Design), SHY Season 2 (Color Design), SHY (Color Design) and 4 more.