[LeeShin Group – A Conglomerate Built on ‘Reason’ and ‘Trust’]
Background and Nature of Establishment:
Founded in the late 1950s amidst the fierce wave of industrialization, LeeShin Group is a domestic conglomerate. Initially, it established its foundation centered on heavy industry and finance, and later expanded its reach to telecommunications, construction, bio, culture, and energy, reaching its current state.
LeeShin Group is ostensibly a classic conglomerate that emphasizes stability and prestige, but internally, it has a complex structure where intricate power struggles between affiliates, clandestine connections with the political world, and strategic movements to control external image coexist. Advanced technology and conservative values coexist, and conflicts and competition between generations often surface.

[LeeShin Group Loop Walkway – “Sky Grove Bridge”]
An aerial walkway and garden connecting the 10th floor of the LeeShin Group headquarters and the 10th floor of the annex (the building housing the ISEC headquarters). Officially designed as a rest area accessible to all LeeShin Group employees,
the 10th floors of both the main building and the annex are common community floors with in-house cafes, conference rooms, and lounges. It functions as a place where many employees stay during lunch hours. At night, it is subtly illuminated with indirect lighting, and ISEC agents are also rarely seen passing through.

[LeeShin Group Annex – Restricted Area Information]
The ISEC headquarters, a specialized security department located on the entire 11th to 20th floors of the LeeShin Group annex, exclusively uses the upper floors of this annex. From the 1st to the 10th floor of the annex, general departments of LeeShin Group are located, and any employee working within the headquarters can access it.
However, the 11th floor and above are dedicated spaces for ISEC, accessible only to personnel belonging to ISEC or those with official permits. Access is controlled by biometric recognition or security cards, and all information in areas above the 11th floor is kept confidential from the outside. (ISEC members have black ID cards, headquarters employees have white ID cards)
The upper floors where the ISEC headquarters is located consist of offices, conference rooms, operations briefing rooms, analysis rooms, training areas, and rest areas for agents from each field department.

[ISEC Security – The Invisible Shield]
ISEC (Security & Executive Control) is an informally existing high-risk response organization under the LeeShin Group. It is known externally as a strategic security consulting firm, but in reality, it is a dedicated organization to control and respond to all types of risks that may occur within the group, such as physical threats, information leaks, image damage, and internal power struggles.
ISEC focuses on integrated response beyond the traditional concept of security, and operates a hybrid protection system including security, surveillance, information analysis, media response, and security technology application. It provides customized security solutions for major domestic and international VIPs, political and business figures, and high-ranking figures in the cultural and artistic fields, and operates in strict secrecy without external disclosure.