ANIME BREAKDOWN:
Hunter x Hunter #52
Underground Auction x Annihilation x Machine Gun

Summary:

At the first auction, Feitang, Franklin and Shizuku kill the entire participants, including Mafia bodyguards Veze and Toshi. Alas, the auction had already been removed by one member of the Injiyuu - the assassin group hired by the ten godfathers of the Mafia. The glum Ryodan clan escape in a hot-air balloon, with Kurapica and Senritsu in hot pursuit.

Video (Fansub):