1. All appeals filed by the Plaintiff and Defendant C are dismissed.

2. Of the appeal costs, the part arising between the Plaintiff and the Defendant B.

1. The reasoning of the court's explanation concerning this case is as stated in the reasoning of the judgment of the court of first instance, except for the addition of the following in Part 3, Chapter 14, of the judgment of the court of first instance, and therefore, it shall be cited as it is in accordance with the main sentence of Article 420 of the Civil Procedure Act.

[Supplementary part] According to the facts without dispute, Gap evidence Nos. 10, 12, and 14 (including the number number), the testimony and the whole purport of the testimony and pleadings by witnesses F of the trial of the party. ① When a building A (hereinafter referred to as the "commercial building of this case") is constructed and the preservation registration has been completed (the date of preservation registration seems to be April 2, 2008) before and after the completion of the preservation registration (the date of preservation registration seems to be April 2, 2008), joint global sports Korea (hereinafter referred to as the "non-party company") is a controlled entity of the commercial building of this case with several buyers, the management and operation agreement (the agreement prepared at the most time out of the management and operation agreement submitted as evidence) was prepared with Gap evidence No. 12, and the date of preparation was to deposit the development expenses set forth in the above agreement with the non-party company's account in accordance with the area or amount of sale, and the non-party company's management and operation expenses were to be paid to the non-party company of this case.