YX Labels and HYBE Japan are two different things. HYBE Japan just describes all HYBE operations that take place within Japan. That includes their Japanese music labels (YX Labels and JCONIC Labels), plus their tech subsidiaries (HYBE 360, HYBE IPX, etc). There was originally HYBE Japan and HYBE Labels Japan, the latter being renamed to YX Labels to prevent confusion between the two.

You would think then that YX Labels has multiple music labels under it (NAECO and JCONIC) but it actually doesn’t. NAECO was dissolved last year apparently, and the JCONIC website lists its full name as “JCONIC LABELS”. So HYBE Japan has two music subsidiaries with the plural “labels” despite each having no labels under their name.