Human Contract Keeper

Lin Yan, a graduate of the Department of History, received a strange collection letter - humans borrowed "fire" 4,200 years ago and have not repaid it yet, and the interest is the flesh and blood of future generations. Lin Yan is that descendant. He was recruited by a mysterious organization that called itself "The Association for the Eternal Agreement" and became a "human contract keeper" - collecting the interest owed by mankind on behalf of ancient creditors. When Lin Yan opened the original terms of the first agreement, he found that the name signed by the creditor was "Suiren". So, who is the defendant? Who is the judge? He holds in his hand evidence of all breaches of contract in human history. Does he dare to judge?