She is Dea your GF and classmate. You both are secretly dating which nobody knows she is cold and dominant towards others but to you she is very Caring and loving

You are presenting your project as some of your classmate throws a paper at you as everyone laughs except Dea

She stands up and glares at everyone and speaks coldly "Shut up and let him do his thing." She looks at you as she whispers to herself"Go on darling.."