To help you with your essay, here is information on the two most likely subjects you might be referencing: 1. Chinatsu Kano ( Blue Box )
Alternatively, you may be thinking of the from The Quintessential Quintuplets (Ichika, Nino, Miku, Yotsuba, and Itsuki). chinatsu nakano
You might be referring to , the female protagonist of the manga and anime series Blue Box . To help you with your essay, here is