Makinami Mari Illustrious’ designation amongst the Children has yet to be revealed, though she is once referred as “Problem Child”. In the preview of the 3rd Rebuild movie, Mari is seen taking off her glasses while in confinement. She is also shown having a private conversation with an unknown character.
She’s a strange character if you ask me, but undoubtedly very cute. Besides, Sakamoto Maaya is her seiyuu, so how can you not love her? Thanks again to Daniel for sending this in!