I've seen all the good shit and can confirm nothing will top UBW, but there are still a handful of stuff that's near it's awesomeness.

I will recommend you the K series, just like UBW it has top tier animation & action/fight scenes, but not much romance. Story is great, but you have to watch the entire series as the movie & S2 is what makes the series so good. Watch in this order: K > K: Missing Kings Movie > K: Return of Kings

Read this before watching, helps you understand some things that you might be confused about (don't worry no spoilers). Also fyi the first 3 ep's are slice of lifey so you might find it boring (I didn't), but picks up from there.

This is first time I recommended something on this sub. You better watch it, Lol.