1. The defendant's appeal and the plaintiff's incidental appeal are all dismissed.

2. Costs arising from an appeal and an incidental appeal shall be respectively.

1. The defendant's grounds for appeal citing the judgment of the court of first instance and the plaintiff's grounds for incidental appeal are not significantly different from the allegations in the court of first instance, and the fact-finding and judgment of the court of first instance are justified even if each evidence submitted to the court of first instance was presented to this court.

Therefore, the court's explanation on the instant case is identical to the reasoning of the judgment of the court of first instance, and thus, citing it as it is by the main text of Article 420 of the Civil Procedure Act.

2. In conclusion, the judgment of the court of first instance is justifiable. Thus, the defendant's appeal and the plaintiff's incidental appeal are dismissed. It is so decided as per Disposition.