Synopsis

The chapter opens with the protagonist questioning captured demonic humans about their motives and their leader. He discovers their plan involves gathering cursed divine artifacts to survive human extinction and learns of a figure called 'Lancelot.' After extracting this information, the protagonist forces the captured humans into contracts, ensuring their loyalty. He then proceeds to trigger the boss of the 3rd floor using a special key, summoning it for a battle using his own unique power of creating and enhancing chess pieces to fight as his 'army'.