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

2. The costs of appeal and the incidental costs thereof shall be individually considered.

1. The grounds asserted by the Plaintiff and the Defendant in the trial of the first instance are not different from the allegations in the first instance court, and the first instance judgment is deemed legitimate even if it is re-examineed.

Accordingly, the court's explanation on the instant case is identical to the entry in the judgment of the court of first instance, and thus, citing it in accordance with the main sentence of Article 420 of the Civil Procedure Act

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