1. The plaintiff's claims against the defendants are all dismissed.

2. The costs of lawsuit shall be borne by the Plaintiff.

1. Basic facts

A. The Plaintiff’s relationship 1) On March 25, 2014, the Plaintiff is the Plaintiff’s building D. (hereinafter referred to as “instant building”) in Goyang-si, Yongsan-si (Seoul-si; hereinafter referred to as “instant building”).

A) A half of the co-ownership shares of No. 901 was acquired, and the head of the health center around that time (hereinafter “the head of the health center”).

(2) Defendant B is an owner who acquired ownership on the 10th floor of the instant building on January 30, 2008, and Defendant C entered into a lease agreement with Defendant B on January 16, 2012 with regard to the 10th floor above, and is a lessee who occupies and uses it.

B. Around August 15, 2015, 1) GX Group e.g., group exercise among the instant health centers. From among the instant health centers, water leakage occurred. The Plaintiff performed the construction of cutting water of approximately 15 meters of sewage pipes connected to the 10th floor of the instant building and bypassing sewage pipes. On the other hand, around October 22, 2015, Defendant B, along with the managing body of the instant building, performed the construction of the rooftop drainage, theme, the floor waterproof, and the floor waterproof construction cost of the instant building; around July 2016, 2016, the indoor structure and the construction cost of the instant building were removed in the process of cleaning water of the instant building, which was installed in the instant 201.

On the other hand, Defendant B, along with the management body of the instant building on June 28, 2016, performed the construction of additional drainage pipes on the instant rooftop and borne half of the construction cost.

3) On July 25, 2016, Defendant B removed the illegal buildings owned by the Defendant B, which were installed on the 10th floor of the instant building (hereinafter “Defendant B”) from August 2015 to July 2016.