1. The Plaintiff (Counterclaim Defendant) is jointly and severally liable to the Defendant (Counterclaim Plaintiff) for KRW 645,061,723 and its amount from December 5, 2015.

1. Basic facts

A. 1) The Plaintiff Company is a company operating “C”, which is a social network development and supply business, and the Plaintiff Company is the representative of the Plaintiff Company. 2) The Defendant is a company established for the purpose of Internet advertising agency, software development and supply business, etc., and a company conducting online advertising business on behalf of the Plaintiff Company, such as Facebuk-do or Kakaotoo, at the customer’s request.

B. (1) On October 2014, Plaintiff B requested that the Defendant wish to run the Crop advertising advertisement. (2) The website is running the real-time competitive advertisement, and the advertising agency certified by the Piop North side has executed the real-time advertisement in accordance with the advertiser’s instructions, and then the advertising agency receives an application from the Piop North side and then claims the relevant amount to the advertiser in the way of claiming the payment.

3) On October 24, 2014, Defendant D sent to Plaintiff B an application for the publication of an advertisement to pay the advertiser in cash within 30 days after the end of the monthly advertisement, and Plaintiff B requested the Defendant to execute the advertisement after receiving e-mail. 4) On December 5, 2014, Defendant D requested the Plaintiff B to pay the advertising cost up to November 30, 2014, and it was known that the claimed amount of the tax invoice to be issued as of November 30, 2014 (hereinafter “fee”), including the advertising agency fee (hereinafter “fee”), was the amount of the tax invoice claim as of November 30, 2014, including the advertising agency fee, and Plaintiff B made a request for settlement from the end of December 14, 2014 to the end of the end of October 15, 2014.

5 Plaintiff B after D requested the settlement of advertising costs.