2girls barefoot expressionless green_skirt hand_on_own_cheek hand_on_own_face head_rest headgear kurusugawa_ayaka long_hair long_sleeves looking_at_viewer lying multiple_girls on_back on_person parted_lips photoshop_(medium) pleated_skirt red_hair robot_ears school_uniform serio_(to_heart) skirt smile sweater sweater_vest to_heart upside-down vest zen_(kamuro)