Doctor Elise :)))
Zettai Heiwa Daisakusen
Ai Wo Utau Yori Ore Ni Oborero!
Very different but both kinda have what you want, I think.
Emperor and the female knight (emperor and knight)
Crimson karma (prince/leader of a rebellion and a REALLY strong knight)
Reimei no arcana (a princess who has supernatural abilities and a prince)
You don't really see the them come out as a couple to the public, but 'Hang out Crisis' is of the 2 hottest Boys at University!!!
I'm looking for manga/manhwa recommendations where the two main characters that end up together is a power couple (both distinguished, superior, over/achiever, good looking, etc) especially in public (differentiating their private life here). It can be yaoi, shoujo, but not yuri/shoujo ai. Thanks in advance !