The facts of the cause of claim and the changed cause of claim do not conflict between the parties, or can be acknowledged by the overall purport of Gap evidence Nos. 1, 2, and Eul evidence Nos. 1 and 2 and all pleadings. Thus, the defendant, the heir of the deceased C, within the scope of the inherited property from the deceased C, is obligated to pay the plaintiff damages for delay in accordance with the agreed rate as to the sum of the principal and interest on credit card use charges up to April 3, 2019 against the deceased C and the principal amount of KRW 42,964,80 among them up to April 3, 2019.