1. The judgment of the court of first instance is modified as follows.

The defendant shall pay to the plaintiff KRW 695,396,340 on June 2018.

1. Basic facts and

2. Each of the above parts of the court's arguments by the parties is identical to the corresponding part of the judgment of the court of first instance (from 4 to 8 pages) except that the 6th 6 parallels and 8 parallels are amended to "D" and the 2nd 7 parallels are added to "a sound construction project" (hereinafter "the project of this case"). Thus, this part of the judgment of the court of first instance shall be cited as it is in accordance with the main sentence of Article 420 of the Civil Procedure Act.

3. Determination as to the claim for agreed amount

A. 1) Where one party sent a document containing any matter different from the terms and conditions of a contract to the other party and received it and raises an objection thereto after concluding a contract, it is deemed that the other party consented to the modification of the terms and conditions of the contract, in light of the type and nature of transaction, transaction practices, details and form of the documents sent out, attitude of the other party, etc. If the content of the contract is deemed to have been modified, it shall be deemed that the other party impliedly agreed to the modification. In such a case where any modified matter resulted in an important modification of the terms and conditions of the contract already concluded, the implied consent should not be readily acknowledged (see, e.g., Supreme Court Decision 2014Da8543, 8550, Oct. 27, 2016). 2) In light of the aforementioned basic facts, each of the evidence, evidence, 5, 6, 10 through 14, 16, 17, 2, 4-2, and 17 testimony or landscape architecture, the following the Plaintiff and the Defendant agreed to the entire testimony or landscape.

The instant agreement invests in “construction cost” (such as civil engineering, landscaping, machinery, electricity, etc.) required for the Defendant’s construction of C.