Eh. I don't like the whole 'it looks nice on the cover, but it sucks inside' thing. I like pretty art in most of my shounen-ai/yaoi stories. I guess 'pretty' is subjective, so I'll have to try to give you some examples of what is 'pretty' to me:

Sanzen Sekai no Karasu wo Koroshi

has some wonderful artwork- shame it's only a few pages =/ The style is very realistic.

Doukyuusei (NAKAMURA Asumiko)

to me, had really great art. The style was very clean, consistent, and the mangaka did a wonderful job with expressions and such. It's not a realistic artstyle, but it's really smooth, it reminds me of XXXHOLiC in a way. I've also read Sotsugyousei by the same author.

Sadly, those are the only ones that come to my mind. I guess I just dislike a lot of art that really makes it difficult to distinguish characters, for example, or makes them look ambiguous as far as their gender goes. I apologise if it's confusing. u-u

the later artstyle really resembles the one i saw in Anata no tame nara doko made mo. i hope it helps

Quote from Hespia Klarerin

the later artstyle really resembles the one i saw in Anata no tame nara doko made mo. i hope it helps

Ah, that's because it's written by the same author. 😀 And thank you, I do love her art.