1. The Defendant shall pay to the Plaintiff KRW 372,30,000 and KRW 300,000,000, out of which are paid to the Plaintiff, from December 16, 2014 to the day of full payment.

1. The parties' assertion

A. The plaintiff asserted that the plaintiff paid interest of KRW 2,50,000,00 to the defendant on February 19, 2003, KRW 2,50,000 per month, and KRW 1,00,000 per July 21, 2009, respectively, and thereafter paid interest of KRW 3,50,000 per month until September 2009. Since the defendant did not pay interest after October 2009, the sum of interest accrued as of KRW 72,30,00,000, and the amount of interest accrued as of November 20, 2014 exceeds KRW 300,000,000,000 per month, the defendant is obligated to pay the loan principal of KRW 300,000,000 to the plaintiff [300,7300,000,000].

B. The Defendant’s assertion that the Defendant lent four qualification certificates related to electricity to the Plaintiff, and borrowed KRW 300,000,000 from the Plaintiff, and paid the principal and interest of KRW 3,500,000 each month, and did not borrow KRW 300,000,000 per month to the Plaintiff.

2. The facts that the Plaintiff lent KRW 200,000,000 to the Defendant around February 19, 2003 and KRW 100,00,000 on July 21, 2003 are without dispute between the parties. If the purport of the entire pleadings is shown in the evidence Nos. 7 and 8, the Plaintiff sent text messages to the effect that the Plaintiff would pay interest on KRW 300,000,00,000 on the principal amount at the time when the Plaintiff promised the Defendant to pay the unpaid interest, i.e., the Plaintiff did not raise any objection, and the Plaintiff did not pay the principal amount to KRW 300,00,000 until November 20, 2014 to the Defendant, and the Defendant did not pay KRW 100,000,000 on the loan amount to KRW 100,000,000 on the loan amount to KRW 100,000,000 on each of the above facts.