There's not that much action, and what action there is, the MC is generally not involved with. He IS learning magic, but in a very realistic fashion, it turns out to require around three years of studying to use it, so that's not the focus of the story either - we just see him studying from time to time.
So what's left? Married-couple romance with the Queen, doing the taxes of an entire kingdom with a computer spreadsheet, carefully NOT getting too involved in court politics, trying to invent soap before the supply runs out, negotiating trade routes, teaching the maids to play video games... In short, situations you basically never read about!