1. The plaintiffs' claims against the defendants are all dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. 1) D is Defendant C Co., Ltd. (hereinafter “Defendant C”) on January 3, 2011.

(2) Around May 2010, Defendant C and the said Technical Research Institute (hereinafter referred to as “Defendant C”) are the Plaintiff’s parents, and the Plaintiffs are the Plaintiff’s parents. The Defendant C and the said Technical Research Institute (hereinafter referred to as the “Defendant C”) are the Defendant C and the said Technical Research Institute (hereinafter referred to as the “instant security contract”).

B. On March 19, 2014, D returned at around 01:23 the following day after leaving the technical research institute and drinking alcohol, and fell from a balcony located in the Technical Research Institute (hereinafter “instant dormitory”) at an insane level (hereinafter “instant dormitory”). At around 07:30 on the same day, Defendant Help was found to be used in the baldy field adjacent to the instant dormitory by the F of the system.

(hereinafter referred to as “instant fall accident”). D was sent back to an Amera University Hospital and was in an emergency operation, and died of the cerebral lecule on May 16, 2017 while receiving the first degree of cerebral lecule disorder and being administered.

C. On the other hand, around March 20, 2014, around 01:50, female researchers, who resided on the third floor of the dormitory of this case, she sleeped the same human body that she was living in the middle floor of the dormitory of this case, and she called the door-to-door security room.

Defendant Ha, who was working at night, was called to the dormitory of this case, was transferred to the dormitory of this case, and the G was moved to the family to the house of this case, and the G was returned to Ha. D.

The dormitory of this case is composed of one building consisting of one underground floor, one ground floor, two and three floors, and is divided into the left corridor and the right corridor based on the central entrance, and is set up at the end of the right side of each floor.

In addition to the photographs by side, the above three sides, except the side of the dormitory outer wall of this case, are placed in a railing of about 1.25 meters from the floor end of the floor.