S.C. Code Ann. § 61-6-151

To protect the health, safety, and morals of the residents of this State, no person, directly or indirectly, individually or as a member of a partnership or an association, as a member or stockholder of a corporation, or as a relative to a person by blood or marriage within the second degree, may have any interest whatsoever in a retail liquor store licensed under this section except the six stores covered by his retail dealer's licenses, pursuant to Section 61-6-141.