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

2. The costs of appeal are assessed against the Defendant-Counterclaim Plaintiff.

1. The reasoning of the court's explanation concerning this case is that the part concerning the reason of the judgment of the first instance is stated in the same part of the judgment of the first instance except where "the date of sentencing" is used as "the date of sentencing of the first instance court" in Part 8, 15, of the judgment of the first instance. Thus, this is accepted in accordance with the main sentence of Article 420 of the Civil Procedure Act.

2. The conclusion is that the plaintiff's claim of the principal lawsuit is justified within the scope of the above recognition, and the remainder of the principal lawsuit is dismissed as it is without merit. The defendant's claim of the counterclaim is justified within the scope of the above recognition, and the remainder of the counterclaim is dismissed as it is without merit. Thus, the judgment of the court of first instance that makes the conclusion is justifiable, and the defendant's appeal is dismissed as it is so decided as per Disposition.