The Royal Garden is a building just outside of Seiyo Academy. It is the headquarters of the Guardians, where they meet to do daily Guardian work around campus or discuss their progress of fighting against the Easter Company.
The garden is like a large, castle-shaped greenhouse with a peaceful atmosphere. The inside has a grand fountain made of white tile flooring that lead up to a sitting area up the stairs. The area is customized by a white round table surrounded by white tables.
The Guardian Characters' Dollhouse is located on the white table, serving as the Guardian Characters' own personal headquarters. The Humpty Lock was kept in a separate room across the garden before it was given to Amu Hinamori.
Members (The Guardians)
- Amu Hinamori (Current Joker)
- Nadeshiko Fujisaki / Nagihiko Fujisaki (Former Queen, Current Jack)
- Rima Mashiro (Current Queen)
- Tadase Hotori (Current King)
- Yaya Yuiki (Current Ace)
- Rikka Hiiragi (Guardian Apprentice - Queen)
- Hikaru Ichinomiya (Guardian Apprentice - King)