1. The Defendants jointly and severally liable to the Plaintiff KRW 47,618,206 and Defendant C with respect thereto from November 26, 2019, and Defendant D with respect thereto.

Comprehensively taking account of the respective descriptions in Gap 1-5 (including each number) and the overall purport of the pleadings, the plaintiff entered into a goods transaction contract with the defendant C with the purport that the plaintiff would supply reinforced glass and double-story glass to the defendant C, and the defendant D jointly and severally guaranteed the defendant C's obligation to pay the price for the goods, and the plaintiff sold the reinforced glass and double-story glass equivalent to the total amount of KRW 47,618,206 to the defendant C until August 12, 2019.

According to the above facts, the defendants are jointly and severally liable to pay to the plaintiff 47,618,206 won of the above goods and damages for delay calculated at the rate of 12% per annum from November 26, 2019, the following day after the delivery date of a copy of the complaint of this case, and Defendant D is liable to pay to the plaintiff 12% per annum from December 9, 2019 to the day after the delivery date of a copy of the complaint of this case.

If so, the plaintiff's claim is justified.