The plot revolving around the imperial harem is very popular with male viewers, and there are fewer female viewers, even less so those who pay attention to the music, and her "zai zai" just happens to be part of a boy band.
Let's set that aside for now and use the mouse to click into the last project to check it out.
Also a serious drama but of a different style, it falls under the category of patriotic and familial affection. The male protagonist's father is the current Prime Minister, and his entire family is framed by a powerful uncle favored by the Empress. This same uncle also usurps the young emperor's power. The male protagonist nearly died at twelve but survived by living in the shadows, assuming a new identity, all for the sake of restoring his family's honor and exposing the once sordid power struggle to the public, reclaiming the former emperor's lineage.