1. The part concerning the claim for the expenses of demand procedure among the principal lawsuit of this case shall be dismissed.

2. The Defendant (Counterclaim Plaintiff) is the Plaintiff.

A principal lawsuit and a counterclaim shall be deemed simultaneously.

1. Basic facts

A. D Co., Ltd. (hereinafter “Nonindicted Company”) was running the business of developing and selling the land of Jung-gu, Jung-gu, Incheon to 4317.9 square meters (hereinafter “instant site”) as Class 1 general residential area.

B. On February 28, 2017, the Defendant (Counterclaim Plaintiff; hereinafter “Defendant”) entered into a contract to purchase KRW 560,964,000 of the instant site (hereinafter “instant site”) and KRW 21 of the instant site between the Nonparty Company and the instant site for the construction of a detached house at KRW 560,964,00 (hereinafter “instant contract”), and paid KRW 20,000 of the first down payment, KRW 80,000 of the second down payment, KRW 80,000 of the second down payment, KRW 80,000,000 of the second intermediate payment, KRW 80,000 of the second intermediate payment, KRW 80,000 of the second intermediate payment, KRW 260,000,000 in total, and KRW 260,000.

Of the instant contracts, the part relating to the instant case is as follows.

Article 1 of the F sale contract of land in a Class-1 general residential area of the Jung-gu Incheon Metropolitan City, Jung-gu, 21, 446.85㎡ 127.68С 319.68§³ 127.68С 1] ① The Party A shall supply the land for the purpose of the indication to B in the following manner, and Party B shall comply with the due date of payment and payment method:

After full payment of down payment within seven days from the date of the second payment of the down payment of the down payment within one month after the date of the first installment payment within seven months from the date of the first installment payment of the intermediate payment, the first intermediate payment of the second intermediate payment of the first intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second intermediate payment of the second installment payment of the second installment payment of the first installment payment of the land within two months from the date of the first installment payment of the land payment of the first installment payment, the land price of 20,000,000 for 50,000,487,000 for 50,487,000, 50,487,000, 009,016,000 for the first installment and the first installment of the land after the completion of the first installment payment of the part payment.