1. The part of the judgment of the court of first instance against the plaintiff, which orders payment below, shall be revoked.

2...

1. Determination as to the cause of claim

A. The Plaintiff asserted as follows: (a) from October 12, 2015 to November 24, 2015, the Plaintiff: (b) supplied the Defendants with a supply of and demand for 3,920,000 won for the construction work; (c) leased KRW 3,00,000 to the Defendants around October 22, 2015; and (d) sold KRW 4,000,000 in total; and (e) from November 24, 2015 to June 24, 2016, the Plaintiff provided the Defendants with services equivalent to KRW 8,630,000 in total at E, G, H, and I’s grain sites.

Nevertheless, the Defendants have a duty to pay the Plaintiff the above construction cost, loan, secondhand construction cost, and service cost, which are the sum of KRW 19,550,000 ( KRW 3,920,000,000, KRW 4,000,000) and damages for delay.

B. 1) Determination as to the claim for the cost of painting construction work: (a) the Plaintiff runs a painting construction business with the trade name of J; (b) the Defendants were supplied with some of the D seal installation works from the Defendants on October 12, 2015, and the fact that the Plaintiff performed it can be acknowledged by comprehensively considering the purport of the entire pleadings in each of the entries in the evidence Nos. 1 and 2, although the evidence submitted by the Plaintiff alone is insufficient to specify the amount of the construction work completed by the Plaintiff; (c) as seen in the above, the Defendants may be deemed jointly and severally to have paid the Plaintiff KRW 6,00,000 to the Plaintiff and the Defendants for the delayed payment of KRW 30,000,000 as the price of the instant painting construction work. Therefore, the Defendants shall pay the Plaintiff and the Defendants for the amount of KRW 6,000,000 as the price for the instant painting construction work.