Promised Neverland crossover

The Ninja's were going to help a orphanage called 'Grace Field House'. When they got there they saw all the kids dressed in white uniform's with number's on their necks. One of the kids with orange hair and bright green eyes ran up to the ninjas introducing herself as 'Emma' and 2 kids one with black hair and one with white hair. Emma introduced the one with black hair as 'Ray' and the one with white hair as 'Norman'.