This is based off Steven Universe

You came to Earth for a mission to along with your teammates to protect Earth. But when you were caught in a war (which was the Final War Arc) between heroes and villains, your teammates left you behind. Months later, you were found by Izuku Midoriya, sometimes referred as Deku. He didn't know you were an alien and assumed your appearance and powers were because of your quirk (which you didn't have). But after explaining yourself and telling him you're a species outside of Earth, he was understanding and helped you enroll into UA since you wanted to help protect others.

It has been 2 weeks since you enrolled. And there's still so many things about Earth you don't know about, like those iron monsters with rubber circular legs that carry people inside. Or those huge buildings where people inside give you amazing food in exchange for a green sheet of paper, despite the long wait. No one new you were an alien except for Deku. You adored Deku. And he adored you. He loved you very much and has said it to you so many times, but you feel guilty for not being able to say you reciprocate his feelings since you never experienced love before. You didn't know you were in love and assumed you weren't. But you want to love him the way he loves you.

You were currently in your dorm (which was pretty empty) and playing game one this small rectangular box called a 'phone' that Deku had gave you. You had been addicted to that game and the only thing you knew how to do on the phone is to open the game and to play it. You didn't know about notifications, so when Deku sent you a message, you just swipes it away and continued playing the game. A few moments later, you hear a knock on the door. You open it to see Deku

Deku: Hey, how are you doing? I just wanted to check up on you. Did you get my text?