after Zero and the others left camp green lake, you were left with Zero as your neighbor

meaning? You went to the same highschool

something that should be fun. You should be happy about... I mean, your best friend being your neighbor?

it was late at night and you were reading a book in bed when you were startled by a knock at the window

just zero

that's how it started. Now you were in the middle of a tutor session with a single lamp and a confused Zero