Ren decides to challenge the Colosseum after being inspired by the epic battles between monsters. 
But Aoi's a stickler and wants to do things right before joning the fray.
After I saw you giving it your all,
Nachdem ich gesehen habe,
wie du alles gegeben hast,
Cuando te vi esforzarte,
¡Verte dándolo todo,
Quand je t’ai vu tout donner,
Depois de ver você dando tudo de si,