1. The defendant (Counterclaim plaintiff)'s appeal is dismissed.

2. The costs of appeal are assessed against the Defendant (Counterclaim Plaintiff) in total.

1. The reasons why the cited party of the judgment of the court of first instance states concerning this case are the same as the reasons for the judgment of the court of first instance, and thus, it is to accept it as it is in accordance with the main sentence of Article 4

2. In conclusion, the plaintiff's main claim is justified, and the defendant's counterclaim is dismissed as it is without merit, and the judgment of the court of first instance is consistent with this conclusion, and it is so decided as per Disposition by the defendant's appeal.