1. The plaintiff (Counterclaim defendant)'s main claim is dismissed.

2. The plaintiff (Counterclaim defendant) is about 42,063 to the defendant (Counterclaim plaintiff).

The main lawsuit and counterclaim are also examined.

1. Basic facts

A. On July 10, 2015, the Plaintiff entered into a contract with the Defendant on July 10, 2015 (hereinafter “instant primary contract”) under which the Plaintiff, the contractor, the Defendant, and the date of the commencement of the construction work (the completion date is indicated only as 2015 years, and the monthly date is in blank) and the contract amount is KRW 550,00,000 (including value-added tax) (hereinafter “instant primary contract”).

B. On February 10, 2016, the Plaintiff and the Defendant concluded a contract to modify the construction contract (hereinafter “the instant secondary contract”) with the contract amount of KRW 621,50,000 (including value-added tax) and the construction period from February 1, 2016 to February 28, 2016.

C. As to the instant building, approval for use was granted on February 23, 2016.

The Plaintiff paid the Defendant KRW 371,00,000 as the construction price for the instant construction work, and the Plaintiff paid the Defendant the construction price in a way that the Plaintiff directly pays the Defendant’s subcontractors a total of KRW 116,934,220 as indicated in the following table:

On the other hand, the Plaintiff paid the construction cost equivalent to the above amount in the manner that the Defendant pays the total of KRW 475,720 on behalf of the Defendant.

On October 20 1, 2015, 20.1, 80,00 D on October 25, 2015 (Facilities) 1, 80,000,00 E companies F on November 25, 2015; 7,00,00 H 8, 00 on November 25, 200 H 6. 8, 000 on November 25, 2015 (FF 0, 000, 06. 0, 00, 00, 6. 6. 0, 00, 00, 6. 10, 00, 6. 0, 00, 6. 30, 00, 6. 0, 00, 11, 40, 00, 30, 10, 130, 205, 10, 2015