1. Defendant (Counterclaim Plaintiff): (a) KRW 41,241,000 to the Plaintiff (Counterclaim Defendant) and its related thereto, from March 29, 2018 to January 19, 2021.

1. Basic facts

A. From October 2017, the Plaintiff: (a) the construction of a new building C on the ground owned by the Defendant (hereinafter “instant building”); and (b) the construction of a new building on the ground owned by the Defendant (hereinafter “instant construction”).

The plaintiff's representative director D did not prepare a contract as a kind of the defendant's elementary school because he was pro rata.

B. The Plaintiff received the payment of the construction cost from the Defendant at any time during the construction process, and the construction was suspended on the ground that the construction cost was not paid at any time on December 6, 2017.

(c)

The representative D of the Plaintiff’s representative director shall enter into a contract for the instant construction project with the Defendant on February 2, 2018 (hereinafter “instant contract”).

B. Around March 2018, the construction was resumed.

(d)

The Plaintiff, while executing the instant construction, did not construct a kitchen, kitchen, kitchen, kitchen, string, string, gas, fences, and second floor boiler construction.

The Defendant carried out each of the above construction works with separate costs, and shared the cost of electrical equipment and materials related to the teD, etc., and toilets for salvines and salvines (hereinafter “instant key construction”). E. The Defendant completed the ownership preservation registration on July 24, 2018 upon obtaining approval for the use of the instant building on July 18, 2018.

F. On October 18, 2018, the Plaintiff sent the following content-certified mail to the Defendant.

C EF

G. The above content-certified mail refers to a written estimate stating the following construction terms (hereinafter “the Defendant of the construction terms of this case”) and attached ex post facto the construction terms of this case on the ground that the front part of the written estimate of this case, while the number of pages is not specified in the construction terms of this case.

However, among the front parts of the instant estimate, the change, screen, etc. included in the ordinary bathing work is included in the details of the bathing room construction.