slayer has old world knowledge

Leon "Assassin, you gave us a lot of trouble you know..."
Zato "Well if it isn't Lord Maining...I got a little tired from running so I took a little break. Nice garden you have here."
Leon "Who's that man with you, Assassin?"
Slayer "I'm retired now you know...Now then, where may I ask did you get that large mountain of guns?"
Leon "On orders from Zepp, hmmhmmhmm~...Payment up front since you asked."
Slayer "Ohh...so that country does business here now?"
Leon "This peaceful world continues to grow, even if a retiree runs a tight ship."
Slayer "Non-retiree* is what you mean...I see now. In that short amount of time they started cultivating imitation Forbidden Beasts...
Zepp somehow acquired cloning technology and put it to practical use."
Leon "Hm!? To know that is--YOU!! HOW DO YOU KNOW OLD WORLD KNOWLEDGE!!?"
Slayer "I'm just an old man, I just happen to be well-informed."
Zato "Now then, Lord Maining, your greedy lust for power is limited to a single arm, as I figured. However, my Forbidden Beast dwells inside my entire body."
Leon "Hmph. Hah! Indeed. The war has ended, but it seems a stray pack of dogs is overrunning the streets.
As for me, a man has to eat* even bastards like you. You understand, don't you? It's a large-scale takeover."