1. Of the judgment of the first instance, the part against the defendant, including the plaintiff's claim changed by this court, is as follows.

1. Basic facts

A. 1) The Plaintiff’s Intervenor (hereinafter “ Intervenor”) entered into a credit guarantee agreement

(A) On December 17, 2013, the Co-Defendant A Co-Defendant A corporation of the first instance trial (hereinafter referred to as “A”).

B. On December 14, 2017, an intervenor entered into a credit guarantee agreement with the Industrial Bank of Korea from December 17, 2013 to December 16, 2014, providing the guarantee principal of A 90,000,000 won and the guarantee period of B.10,000 won under the Credit Guarantee Agreement with the Industrial Bank of Korea from December 2, 2016 to December 14, 2017, and the guarantee period of B. 10,000 won was changed by 20,000 won to December 14, 2017. (hereinafter “the first credit guarantee agreement”). The intervenor entered into a credit guarantee agreement with D. 20,000 won and the guarantee period of B.10,000 won as collateral for the guaranteed principal of A. 30,000 won and the guarantee period of B. 20,000 won and the amount of credit guarantee guaranteed by the Intervenor from D Bank from April 19, 2017.