I've only watched the first half, but most of the subtext up to that point comes from these two playing out Takarazuka roles, where the star who everyone wants to be plays all masculine roles while they have a "consort" who normally plays very feminine roles opposite them.
The one pretty clear lesbian character in the series, who's got a huge, possessive crush on the main character, is largely played for laughs and doesn't get any reciprocation at all.