1. The defendant's appeal as to the principal lawsuit and counterclaim is dismissed, respectively.

2. The costs of appeal shall consist of a principal lawsuit and a counterclaim.

1. The reasoning of the judgment of this court for the acceptance of the judgment of the court of first instance is as follows: “The defendant shall be “the above construction cost” to “the plaintiff; “the witness D’s testimony” of the fourth 10th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th th

2. If so, the plaintiff's claim of the main lawsuit is justified, and the defendant's claim of the main lawsuit is accepted within the scope of the above recognition, and the remainder of the counterclaim is dismissed as it is without merit. The plaintiff's claim of the main lawsuit and the judgment of the first instance court on the defendant's counterclaim are just in conclusion, and all appeals against the defendant's main lawsuit and the counterclaim are dismissed as it is so decided as per Disposition.