Simon Middle School (至門中学, Simon Chūgaku) is a school that was first introduced in the Inheritance Ceremony Arc. Seven students transferred from this school to the earthquake-free Namimori Middle School due to an earthquake in their area that was caused by the future Arcobalenos' sealing of the Mare Rings in the past and the conversion of the Box Weapons into the Animal Rings.
The seven students that transferred to Namimori are:
- Simon means "an important gateway."
- On the compass of the crest, North and South are inverted, meaning that Reborn could possibly be holding the letter upside-down, so the true crest could be read as "Nowis."