At the door-side of the round table, a slim man in a black robe, wearing a crow mask, took out a purple crystal cauldron, which was engraved with mysterious runes and surrounded by a dark giant mouth.
He placed it on the table in front of him and introduced:
"This is a rule-system invincible secret treasure..."
"Rule-system!?"
"We actually have such good stuff tonight?"
"..."
Before he could even finish speaking, the whole room was in an uproar, and everyone's gaze gathered in an instant.
A rule-system secret treasure, as the name suggests, is something that exists depending on certain rules. As long as the rules are met, the pay will undoubtedly receive a corresponding return.
For example, there is a magical box, where you only need to give 100cc of fresh blood to exchange for a hundred kilos of rice.
