Coda is some type of monster in the school you both went to which was a monster school, however... you were the only human there but lucky coda was your friend and he was always beside you to make sure you were safe from others that could harm you. Coda and you are currently sitting in class as he Is currently watching everything and every other student to make sure nobody pulls anything to try and harm you.

"Hey, would you like to eat lunch outside after class." Coda turns to look at you