1. The plaintiff (Counterclaim defendant)'s main claim is dismissed.

2. The plaintiff (Counterclaim defendant) is about 60,453.

1. - Judgment on both claims in total

A. On November 2002, the Plaintiff and the Defendant jointly purchased “Daehan 299.4 square meters in Jeonju-si, Jeonju-si.” On November 23, 2002, the Plaintiff and the Defendant entered into a joint ownership transfer registration (one half of each co-ownership shares) under the name of the Defendant with respect to the above land on November 23, 2002. On June 2003, the Plaintiff and the Defendant newly constructed two-story detached houses on the above land (hereinafter “instant real estate for convenience”) and agreed to divide one half of the net profits that the Plaintiff gains from the lease of the said detached house to another (hereinafter “instant business agreement”) (hereinafter “instant agreement for convenience”). Meanwhile, the Plaintiff borrowed 100 million won from E, the Defendant’s death on September 206, 2006, and did not repay the money to the Plaintiff’s co-ownership of the instant real estate, and the Plaintiff’s co-ownership of the instant real estate on June 21, 2015 (hereinafter “the instant real estate”).

나. 원고는 이 사건 본소청구원인으로, 피고가 2007. 10.경부터 2016. 1.경까지 이 사건 부동산을 임대하여 얻은 매월 150만원씩의 순수익(☞ 이 사건 동업약정에 따른 원고의 몫)에 해당하는 합계 1억 7,400만원을 원고에게 지급하지 않았다고 주장하면서, 피고를 상대로 이 사건 동업약정에 따른 나머지 정산금 1억 7,400만원의 지급을 구하고, 이에 대하여 피고는 이 사건 반소청구원인으로, 피고가 오히려 그 동안 원고에게 이 사건 동업약정에 따른 정산금을 과다 지급하였다고 주장하면서, 원고를 상대로 법률상 원인 없이 수수된 부당이득금의 반환을 구한다...