Seiichirou Kondou from The Other World's Books Depend on the Bean Counter is a prime example and gets a mention in the Votaries' post.
From a romance point of view, Kondou is so enchanting because throughout the series (manga and light novels), he retains the characteristics of a somewhat uptight workaholic with a gut sense of money matters being "off," a gut sense he then backs up through research and detailed paperwork. He continually makes logical appraisals of what will actually save the country money, as opposed to what certain nobles and leaders want for self-aggrandizing and sentimental reasons.
So in several scenes, Aresh argues, "Yes, but what I want (that you live with me, get more rest, eat the foods I provide) will make you more efficient."
I love the chibi associated with Kondou. He knows Aresh is right. He can't argue, "I don't want to be efficient." He is irritated all the same!
In the end, Kondou is a great defense of the position maintained on this blog: The best romances keep people who they are.
