Although it runs entirely underground , the Minatomirai Line is not considered part of the subway network .
Although it runs entirely underground , the Minatomirai Line is not is not administered by the Transportation Bureau , but by the Yokohama Minatomirai Railway Company .
Although it runs entirely underground , the Minatomirai Line is not considered part of the subway network , and is not administered by the Transportation Bureau , but by the Yokohama Minatomirai Railway Company .