1. On December 30, 2017, the Plaintiff (Counterclaim Defendant) paid KRW 9,00,000 to the Defendant (Counterclaim Plaintiff) for each of the instant KRW 9,00,000, and on December 30, 2017, May 4, 2018.

1. Basic facts

A. On April 26, 2017, the Plaintiff entered into the instant contract with the Defendants on April 26, 2017, the E and F of Yongsan-gu Seoul Metropolitan Government Building D (the Defendant is a multi-household house, each of which has completed registration of ownership preservation as one-half shares.

hereinafter referred to as "the instant house", and each house shall be referred to as the number of houses.

(2) According to the contract of this case, the contract of this case was concluded to sell 890 million won in lots (the instant contract). 2) The contract of this case is that the contract of this case is to pay 20 million won in total at the time of the contract, 50 million won in total, and 40 million won in total at the time of the contract, as of April 28, 2017, and as of May 31, 2017, and the remaining 780 million won in remainder.

3) In the instant contract, the area of the building subject to sale is written in E as “26.8 square meters equivalent to the copy of the register” in subparagraph and “29.58 square meters equivalent to the copy of the register” in the case of subparagraph (F). In the instant contract, the special agreement states that “a contract shall be entered into with the knowledge of the contract amounting to 15.5 square meters (E), 23 square meters (F) after verifying the on-site return and the copy of the register of the register of the register”; the seller shall pay to the buyer the portion of the extended area immediately after the receipt of the balance, 15.5 square meters (E), 23 square meters (F), 5 million won (E), and 7.5 million won (F), and the buyer shall be liable for all subsequent matters (excluding a charge for compelling performance) arising from the extended area.” Article 3 of the instant contract states that the seller shall pay the amount of the down payment to the buyer in the event that the seller has performed this contract, and the seller shall not pay the down payment to the seller.”

B. 1) The Plaintiff paid to the Defendants the sales price of the instant contract in KRW 20 million on the day of the contract, and KRW 17 million on April 28, 2017, respectively. 2) Defendant B paid the Plaintiff the down payment amount of KRW 33 million on May 1, 2017.