The Gram Scale Tournament is open to any A·T team of B-Class or higher; however, the necessary registration documents must be completed and submitted along with the team leader's R.E.A.D. data before the clock tower at Tropaion Tower tolls nine times. Sleeping Forest serves as an officiator to the tournament, as Tropaion Tower is their territory. However, should a particular team enter to win the Sky Regalia and possesses the strength to do so, they will enter the tournament personally to deal with the threat.