A. Comprehensively taking account of the overall purport of arguments as stated in Gap evidence 1 through 7, the plaintiff was under dispute between the parties or between the non-party 5, and the non-party 2 entered into an agreement on March 7, 2012 with D (the trade name was changed to B; hereinafter "non-party 2") to pay 100 million won to the above bank within the limit of 90 million won which is the guaranteed amount for the payment of the principal and interest of the loan within the limit of 50 million won for the guarantee to pay the principal and interest of the non-party 4, and if the plaintiff performed the credit guarantee obligation with the above bank on behalf of the non-party 5, the non-party 2 was under an agreement on behalf of the non-party 4, 500 won for the repayment of the guaranteed amount, the non-party 4, 500 won for the repayment of the guaranteed amount, 50 million won for the payment of the guaranteed amount, 50 billion won by the plaintiff's repayment of the guaranteed amount.