1. The Plaintiff’s Intervenor’s appeal against the Defendants and Defendant B are dismissed, respectively.

2. The appeal costs.

1. The reasoning of the court's explanation of this case is the same as that of the part concerning the reasoning of the judgment of the court of first instance, and thus, it can be cited by the main sentence of Article 420 of the Civil Procedure Act.

2. In conclusion, the plaintiff's claim against the defendant B is justified within the scope of the above recognition, and the remaining claims and claims against the defendant C and D shall be dismissed as it is without merit. The judgment of the court of first instance is just in conclusion, and it is so decided as per Disposition by the plaintiff's supplementary intervenor's appeal against the defendants and the appeal by the defendant B.