Most sequels usually have a main flaw. They either try to replicate the exact same elements as their prequel (and they end up becoming a worse version of the exact same story), or they let go of the elements in the prequel too much, to the point that both the setting and the characters are completely unrecognizable.
I believe that Utsukushii Kare/My Beautiful Man found the perfect middle ground: it didn't forget about its origins, but at the same time it's able to bring the story forward naturally. I know that this sounds like the bare minimum, but it's so unusual I couldn't help being amazed by it.
Kiyoi and Hira's story continues from where it was left and we're allowed to see them adjusting to their life together, among many doubts, attempts and even failures, all while they explore their individual ambitions and dreams. I loved the fact that while this is a sequel where the two are finally a couple, it doesn't mean that their relationship has magically become perfect, but at the same time the change between this show and its prequel is visible.
The acting was as great as before, if not even better, and both the music and the silence were used well. I also liked how the story alternated different sides of the life of the two protagonists.

A must-watch for anyone who loved the original "My Beautiful Man" series. I recommend watching that first if you haven't yet!