Magic Knight Rayearth Riko 25 Journeys part 1

When it comes to an Isekai Anime, it's like having different versions of the Mushroom Kingdom or even other stuff like Digimon and the Mystery Dungeon franchise. Hikaru Shidou is like the Protagonist while Fuu Hououji and Umi Ryuuzaki are part of the team cuz they're the only ones that were summoned by Princess Emeraude to save Cephiro from Zagato.