1. The Defendant shall pay to the Plaintiff KRW 20,023,257 and the interest rate of KRW 15% per annum from April 19, 2016 to the date of full payment.

If the purport of the entire pleadings is added to the statements in Gap evidence Nos. 1 through 5, the plaintiff can be acknowledged that the defendant supplied light steel materials to the defendant from April 12, 2013 to November 30, 2015 and the outstanding amount remains at KRW 20,023,257. Thus, the defendant is liable to pay the plaintiff KRW 20,023,257, barring any special circumstance.

In this regard, the defendant asserts that it is unreasonable for the plaintiff to unilaterally claim the payment of the price without refusing the agreement, even though the plaintiff agreed to settle the price by the method of water exchange with the plaintiff. Therefore, in accordance with the evidence mentioned above, the defendant's assertion against this is without merit, since it is recognized that the plaintiff was also supplied with part of the goods from the defendant and processed the price by offsetting it with the amount receivable, but there is no evidence to prove that the plaintiff

Therefore, the Defendant is obligated to pay to the Plaintiff the amount of KRW 20,023,257 as well as damages for delay calculated at the rate of 15% per annum from April 19, 2016 to the date of full payment after the original copy of the instant payment order was served on the Defendant. Thus, the Plaintiff’s claim is justified.