1. The Plaintiff (Counterclaim Defendant)’s appeal against the instant principal lawsuit, and the instant principal lawsuit and counterclaim by the Defendant (Counterclaim Plaintiff).

1. The reasons for the court's explanation concerning this case are as stated in the reasoning of the judgment of the court of first instance, except for the addition of the statements in No. 9, No. 3, and No. 9 to No. 3, and No. 9 to the evidence submitted by the court of first instance due to lack or rejection of the respective arguments of the plaintiff and the defendant, and therefore, it is acceptable in accordance with the main sentence of Article 420 of the Civil Procedure

2. In conclusion, the judgment of the court of first instance that partly accepted the plaintiff's main claim and dismissed the defendant's counterclaim. Thus, all appeals against the plaintiff's main claim of this case and appeals against the defendant's main claim of this case and counterclaim of this case are dismissed. It is so decided as per Disposition.