However , the class president Eri Shinkai invites her after school to join her Treasure Hunting Club , using the offer of piloting one of her company 's subs as the hook .
Meanwhile her posters advertising her salvaging services are taken down by the student council .
The class president Eri Shinkai invites her after school to join her Treasure Hunting Club , using the offer of piloting one of her company 's subs as the hook .
Meanwhile her posters advertising her salvaging services are taken down by the student council .