Favorite manga that isn't Pokespe/Adventures?

That one gets all the attention, but what are your favorites from the REST of the plethora of manga series out there?

I like Diamond and Pearl Adventure!, the one by Shigekatsu Ihara that follows wild boy Hareta and secretive Mitsumi on their adventures through Sinnoh. The way he characterizes Cyrus is fascinating, and he comes off more like he does in the games where he's very clearly not emotionless (DPA Cyrus never claims to be, unlike in the games, and yet somehow comes off more game accurate!).

Magical Pokemon Journey is another nice one and I wish that VIZ had finished their translation because where they left off is the most depressing story in all of Pokemon (there's a chapter about a Quagsire with dementia no I'm not making that up) and it's a massive tonal shift from the entire rest of the series, which is a mostly light and fluffy affair.