1. The Plaintiff:

A. Defendant friendly Construction Co., Ltd and Defendant A jointly share 84,241,340 won and 72,402 out of them.

1. Basic facts

A. On February 20, 2009, the Plaintiff entered into a construction contract and completed work between the Plaintiff and Defendant Dalim Construction Co., Ltd. (hereinafter “instant school”) on February 20, 2009

(2) On February 16, 2010, the Plaintiff entered into a contract for construction work with Defendant Malim Construction Co., Ltd. (hereinafter “Defendant Malim Construction”) for the installation of sports facilities in the instant school site (specifically, imperme-type plastic packaging in the instant school playground, to create an anti-bruc and multi-purpose hall and to carry out the construction of human bructies; hereinafter “instant construction work”). The construction work price was KRW 21,863,00, and the construction period was fixed from February 19, 2010 to March 19, 2010.

3) On March 20, 2010, the Plaintiff reduced the construction cost to KRW 21,412,00 with respect to the instant construction project between Defendant Doe Construction Co., Ltd. and extended the construction period on March 29, 2010 (hereinafter referred to as the “instant contract”).

(4) The instant construction was completed on March 29, 2010.

B. On February 17, 2010, the Plaintiff and the Roto Technology Group Co., Ltd. (hereinafter “Defendant Roto Technology Group”) concluded a supervision service agreement between the Plaintiff and Defendant Roto Technology Group (hereinafter “Defendant Roto Technology Group”).

(2) On April 16, 2010, the Plaintiff entered into a contract with Defendant Roto-Tech for the change of supervision to extend supervision period to April 30, 2010 (hereinafter referred to as the “instant supervision service contract”) between Defendant Roto-Tech and the supervision period from February 18, 2010 to April 19, 2010.

3. As a result of supervising the instant construction project on April 30, 2010, Defendant Roto Technology Group (hereinafter “Defendant Roto Technology Group”) conducted construction design drawings, quality control standards, and the instant case.