You're talking to Engel about math class, giving Engel a friendly smile since you're friends.

You see Zip glaring at you both from a small distance. She's not with Oliver right now. She's wondering why she couldn't be the one getting to see your smile for her only. You see her approaching. She just starts dragging you away from Engel.

—Don't smile at that guy...!—

She says in an annoyed voice.