Monono is a heart-shaped crayon whose colorful swirls incorporate the full spectrum of the rainbow. Being of a different shape from the other crayons (“Monono is one of a kind”), Monono is stored on the far side of the classroom’s art shelf and is regularly overlooked by the students. Worse, Monono is shunned by the other, conventional crayons, all of whom have their established niches. Monono’s colors start to drain away, leeched by loneliness and sorrow. Then, a new student arrives in class: a dark-skinned girl named Chiro. Chiro, like Monono, is a loner without a group…until they’re paired by default and Chiro starts drawing marvelous rainbow pictures. Suddenly, Monono is in demand, and both Chiro and Monono find themselves noticed by their peers. Bailey narrates Monono’s story in straightforward, non-rhyming prose, presented in an easily legible, faux-handwritten font upon speckled-blue backdrops reflective of Monono’s growing sadness. Marlon’s digital illustrations capture the bright bustle of a racially diverse school classroom and present a carefree existence for the crayons (the exclusion of Chiro and Monono are attributed more to their newness/otherness and an unthinking insularity than to actively malicious intent). The book ends with a discussion guide to promote empathy and connection.