I think what I like the most about this show is the characters. I love nearly all of the secondary characters. From William's family, to Hakim, and the Molders family in the second season...there's such a variety of personalities. *__* I also like how Eleanor, the romantic rival, is not villainized at all; she's just an innocent young girl who falls in love with the wrong guy. I think it's thanks to these characters that it's possible to enjoy this series even if you're not invested in William and Emma's romance.
I also like the slice-of-life aspect (though it's not nearly as prevalent in the second season compared to the first). Everything is meticulously researched, and it really makes you feel like you're in London, even though it's animation. If you're a history fan, this is a guaranteed Must See.
Episode 1: The Gift The way Emma and William first meet is amusing. How they start their relationship is also very cute. :)
Episode 2: Two Worlds In which Eleanor and William's siblings are introduced. William is rather naive when it comes to class differences, leading to some awkward moments.
Episode 3: Confession ELEPHANTS LOL. Oh god I love this episode. Seriously, even if you don't plan on watching the series, you NEED to download this episode. Hakim is honestly one of the funnest characters ever. XD
Also, HAPPY BIRTHDAY kirarakim!!! :D