A. On November 10, 2017, the Plaintiff entered into a construction contract between the Defendant and the Defendant for construction of the first-class neighborhood living facilities built by Nonparty D Co., Ltd. in Jung-gu Seoul, Jung-gu, Seoul, and for construction of reinforced concrete process.

(F) The fact that the construction cost of reinforced concrete processing is 37,620,000 won (171 square meters, 220,000 won per square year) is 37,620,000 won (171 square meters, 220,000 won) is not in dispute.

B. The Plaintiff asserted that (i) only received 33,500,000 won out of the construction price of reinforced concrete process from December 8, 2017 to June 27, 2018, and (ii) did not receive KRW 4,120,000.

The defendant's defense that the defendant paid KRW 39,660,00 to the plaintiff, and that D paid KRW 6,000,000 to the plaintiff in excess is ultimately paid.

B. The details of transactions between the plaintiff and the defendant and their arguments are as follows:

(갑 제4호증, 을 제1, 2호증 참조). 입금내역 원고 주장 수령 피고 주장 지급 2017-11-28 1,000,000 E 대금 C 대금 1,000,000 2017-12-01 5,000,000 E 대금 C 대금 5,000,000 2017-12-08 7,760,000 5,760,000원 F 2,000,000 7,760,000 2017-12-16 1,000,000 1,000,000 1,000,000 2017-12-24 3,500,000 3,500,000 3,500,000 2017-12-28 400,000 G 400,000 2017-12-29 6,500,000 6,500,000 6,500,000 2018-01-18 1,000,000 1,000,000 1,000,000 2018-01-21 2,000,000 2,000,000 2,000,000 2018-01-25 3,500,000 3,500,000 3,500,000 2018-02-19 2,000,000 2,000,000 2,000,000 2018-03-04 2,500,000 2,500,000 2,500,000 2018-03-31 1,000,000 1,000,000 1,000,000 2018-05-05 5,000,000 D 입금 5,000,000 5,000,000 2018-06-18 2,500,000 2,500,000 2,500,000 2018-06-27 1,000,000 D 입금 1,000,000 1,000,000 합계 33,500,000 45,660,000 ㈎ 2017. 11. 28.자 1,000,000원, 2017. 12. 1.자 5,000,000원(을 제2호증)은 원고가 E 공사대금의 변제라고 주장하는 이 사건에서, 위 송금이 C 공사대금의 변제라는 사실을 인정할 증거가 없다....