All appeals filed by the Defendant (Counterclaim Plaintiff) against the principal lawsuit and counterclaim of this case are dismissed.

The costs of appeal are assessed against the principal office.

The defendant's appeal citing the judgment of the court of first instance is not significantly different from the argument in the court of first instance, and even if the evidence submitted to this court is presented to the court, it is recognized that the facts of first instance and the judgment are legitimate.

Therefore, the judgment of this court is identical to the reasoning of the judgment of the court of first instance, and thus, it is accepted by the main text of Article 420 of the Civil Procedure Act.

In conclusion, the judgment of the first instance is legitimate, and all appeals against the defendant's principal lawsuit and counterclaim are dismissed.