The defendant's appeal is dismissed.

Expenses for appeal shall be borne by the defendant.

3. A defendant among the indications of parties to a judgment of the first instance.

1. The reasoning of the court’s explanation regarding this case is as stated in the reasoning of the judgment of the first instance, except for using “the form, content, etc. of the above e-mail” as “the form and content of the above e-mail, and the content of the message sent and received with the Defendant’s other employees through Kakao Stockholm, etc.” around June 2018, the time when the above e-mail was sent, as stated in the main text of Article 420 of the Civil Procedure Act.

2. As such, the decision of the first instance court is justifiable, and the defendant's appeal is not accepted as it is without merit, but it is decided to correct the appeal as there is a clear clerical error in the decision of the first instance.