I think the Former King plot has just about played itself out by this point, unless the manga changes things the Foxes end up in Hiya's inner world anyway. Flio not ending this nonsense that he is completely capable of doing is irritating though. If he was doing this to heal the rift between demons and humans by having them capture the Former King together would be one thing, but he is entirely too content to just let this dude keep fucking things up for him, his business, his family and his friends.