A. The Defendants are jointly and severally liable for KRW 3,450,000 and KRW 1,500,000 among them, Defendant B.

A. The pertinent Plaintiff is the father of E, and Defendant B is the actual manager of Defendant C Co., Ltd. (hereinafter “Defendant C”) with the representative of F, one’s own child, and the main purpose of real estate development business, and the Plaintiff, Defendant B, and D are between the Plaintiff, Defendant B, and D, who were in their friendship from the time of high school.

B. The Plaintiff paid KRW 520,00,000 to Defendant C, and KRW 1,50,000,000 on July 30, 2010, respectively, to Defendant C, and KRW 1,500,000 on November 26, 2010.

(hereinafter referred to as "each of the above money" is added to the above money.

The Plaintiff and the Defendants, written between the Plaintiff and the Defendants, prepared the following loan certificates (hereinafter referred to as “the loan certificates of this case”) stated as “the date of preparation: November 26, 2010; creditor: Defendant C, B, and guarantor: Defendant D: and affixed their seals on their respective names.”

The loan certificate shall be 150,000,000 won (1,500,000,000) in full and shall promise to borrow and implement the following provisions.

1. The maturity of the principal shall be December 28, 2010 and a repayment shall be made in the address of the creditor;

b. 2. The interest shall be one billion won per day and the time for payment shall be January 28, 201 and shall be agreed to have been paid in the address of the obligee at the address of the obligee;

b. In order to clarify the above contract, this document shall be prepared, signed and sealed, and one copy shall be kept.

On July 27, 2012, the Plaintiff, Defendant B, and Defendant C Co., Ltd. (hereinafter “Defendant B and Defendant C Co., Ltd.”) drafted between the Plaintiff, Defendant B, and Defendant C borrowed KRW 520,000,000 (520,000) to the Plaintiff on July 30, 2010 and did not repay the debt until July 2012.