Monoe (モノ江), (derived from monochrome) is found in the City, and is most likely related to Monoko.

Monoe crying

Monoe crying outside of the School

Monoe can be initially found crying on a staircase in front of the School. If you get too close, she shouts at you, throwing you backwards. To make her move out of the way, you need the Umbrella Effect. On the top floor of the School, you have to assemble her Photograph and show it to her. She then dissolves, allowing access to the Red School.