1. The Plaintiff:

A. Defendant B Co., Ltd.: (a) from June 15, 2013 for KRW 520,954,639 and for KRW 101,00,000 among them;

1. Circumstances leading to the dispute of this case;

A. The status of the parties is an autonomous management body organized by their occupants to manage the Geumcheon-gu Seoul Metropolitan Government Building A (hereinafter “instant factory building”). Defendant B (hereinafter “Defendant B”) is a person who constructed and sold the instant factory building, and Defendant C Co., Ltd (hereinafter “Defendant C”) is a contractor who contracted the construction of the instant factory building.

The defendant Construction Mutual Aid Association is a guarantor who has entered into a warranty contract on the instant factory building with the defendant C as follows:

B. On August 25, 2009, Defendant C, who entered into a contract and entered into a construction agreement, concluded a contract with Defendant B for the remaining construction cost of KRW 14,121,80,000 with the exception of the portion of the construction work performed by Esc construction, the former contractor, from among the new construction works of the instant factory building, until October 2008.

The instant factory building was approved on May 13, 2010.

C. From May 13, 2010 to May 12, 2015, the warranty period of the contract for the repair of defects is 80,528,670 E from May 13, 2010 to May 12, 2013, the term “the warranty period of the construction of reinforced concrete (five-year defects)” is 20,176,914 F from May 13, 2010 to May 12, 2013, the term “the warranty period of the construction of reinforced concrete (three-year defects)” is 20,176,914 F from May 13, 2010 to May 12, 2012, Defendant 200: (a) the aggregate of the warranty period of the construction of the instant building (three-year defects); (b) the warranty period of the construction of the instant case from May 13, 2010 to May 13, 2015.

thereafter.