1. The part against the Defendants in the judgment of the court of first instance is revoked, and the Plaintiff corresponding to the revoked part is the Defendants.

1. The contents of the basic facts are the same as '1. Basic Facts' among the reasons for the judgment of the court of first instance, and thus, they shall be quoted in accordance with the main sentence of Article 420 of the Civil Procedure Act.

2. Determination as to the cause of claim

A. In mediating the instant lease agreement, Defendant D had the duty to verify and verify the actual amount of secured debt of the right to collateral security established on the market price and the amount of the right to collateral security, and explain the risk of not being refunded to the Plaintiff, but did not perform the duty to explain the risk of not being refunded the lease deposit. Defendant D suffered losses for which the deposit was not paid at all in the course of voluntary auction for the instant cartel that was conducted after the conclusion of the instant lease

Defendant D is obligated to pay the Plaintiff the lease deposit amount of KRW 20 million, the amount of facility transfer proceeds of KRW 20 million, brokerage commission of KRW 8.9 million, and the delay damages amount of KRW 228.9 million. Defendant D is jointly with Defendant D and jointly with the Plaintiff, and the Plaintiff is obligated to pay KRW 100 million and its delay damages, which are the maximum amount of the mutual aid money stipulated in the instant mutual aid agreement.

B. According to Article 25(1)1 and 3 of the former Business Affairs of Licensed Real Estate Agents and Report of Real Estate Transactions Act (Amended by Act No. 11943, Jul. 17, 2013); and Article 21(1)2 of the Enforcement Decree of the same Act (Amended by Presidential Decree No. 25522, Jul. 28, 2014; Presidential Decree No. 25522, Jul. 28, 2014), where a broker is requested to act as a broker, the broker must verify the status, location, ownership, mortgage, etc. of the relevant object and explain it faithfully and accurately to the broker who intends to acquire the right thereof, and present evidentiary materials, such as a certified copy of land cadastre registration certificate.

Provided, That if the right to collateral security has been established on the object of brokerage, the broker shall investigate and confirm the maximum debt amount.