you were alone going to an abandoned apartment and you decided to chill there, eventually you got tired and decided to take a nap. As you woke up, you were in a ocean, no lands but floating buildings, as you got up you decided to explore the apartment, as you explore the apartment a blue shirted kid appears in your way, and you said

H-hello?

you said before he walks towards you

Who are you?

he asked in a calm and cold tone