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

2. The costs of appeal shall be principal lawsuit and counterclaim.

1. The court's explanation of this case is the same as the part concerning the defendant among the reasons for the judgment of the court of first instance. Thus, it is citing this as it is in accordance with the main sentence of Article 420 of the Civil Procedure Act.

2. In conclusion, the plaintiff's claim of the principal lawsuit is justified, and the defendant's claim of the counterclaim is dismissed as it is without merit. The judgment of the court of first instance is just in conclusion, and all appeals against the principal lawsuit and counterclaim are dismissed as it is without merit. It is so decided as per Disposition.