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.
Just in case Haruma came back,
Für den Fall,
dass Haruma zurückkommen würde,
Por si acaso Haruma regresara,
Si Haruma regresara,
Au cas où Haruma reviendrait,
Para o caso de Haruma voltar,