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

1. The reasoning for the court's explanation of this case is the same as the ground for the judgment of the court of first instance, and it is difficult to conclude a different conclusion even if the result of the party's on-site inspection is added, thereby citing it as it is in accordance with the text of Article 420

2. Thus, the plaintiff's main claim and the defendant's counterclaim are all dismissed as it is without merit. The judgment of the court of first instance is just in conclusion, and the plaintiff's appeal against the main claim and incidental appeal against the defendant's counterclaim are all dismissed as it is without merit. It is so decided as per Disposition.