At 35 th minute,he talks about when bercy was about to leave ferre and reveals that once he was with bercy and bercy told him "ken i am a big sorcerer and the day i will go to maison mere you'll see what will happen" and that he has "4 eyes"
and ken asked him to prove his power, and bercy said get your camera, we are in a space which is like a farm right now with my power i will get all animals next to me without moving and indeed several types animals came quickly and surrounded him and ken says he got scared when it happened( there were images on youtube indeed,i am sure some here remember it)
so he was not surprised with the way bercy's test happened and he adds that that all that group of guys who left ferre have not really gone anywhere because of the way they stabbed ferre in the back