It's in the title. Romance. Okay, scifi and mystery are the other two, but it'll take a while for these two genres to really pick up. Some people dislike on scifi and mystery parts, because they involve with few more characters. Taking screen-time away from Kudo and Kujirai more. Well, the two additional characters are in homosexual relationship. I'm aware seeing fags is enough turn some people off no matter what.
So far, with two episodes, they cut few bits and re-arrange already. Introduction to Xiaohei is cut, this part is before Hajime Kudo sleep-kissing Kujirai in manga.
Flashback when Kudo first met the Kujirai-B is after Kujirai talks to Youmei (anime) instead of before Kujirai wants to talk to Youmei (manga). Another part get cut where Kudo and Kujirai help a chicken store, walk through small alleys and see a giant billboard of Dr.Hebinuma. Most important part is Kudo's opinion on Hebinuma and the second time Kudo talking how Kujirai ears aren't pierced after Kujirai visiting Hebinuma clinic. Two times would be more convincing than one time to Kujirai wants to try on earrings right?
Ep 2 ends on middle of chapter 15 manga.