Ep. 57: Yuma invoca al Número 54 Corazón de León para romper la maldición de Alito mientras Alito revela su naturaleza cruel.

57

Yuma keeps trying to find some way to break the curse on Alito. He thinks that the Mythyrian Number that holds Alito's memories is the key to turning him back to the guy he used to be, and so without any regard to the danger that might befall him, he Summons "Number 54: Lion Heart". Meanwhile, Alito keeps showing a more cruel and evil nature, and eventually Summons a new "Number" which pushes Yuma into a corner. (Source: Yu-Gi-Oh! Wiki)