Lal'c removing her seal in Episode 2 of Top o Nerae! 2: Diebuster.

A Seal is a small adhesive object placed on the forehead of a Topless in order to seal their abilities while they are not in use. It is required for all Topless to wear a seal while not in combat. In order to prevent a Topless from using their abilities without authorization, special headgear may be forcibly attached in order to hold the seal in place.


Lal'c and Tycho Science wearing headgear meant to prevent their seals from being removed.