... that's the naked loli bathing anime, right? I think that's the only thing I can recall hearing about it.
Did you not hear about the multiple plagiarism scandals related to the original author?
Madhouse had to make a formal apology while the NGNL anime was airing, because unlicensed art was used directly in the show ... from a Pixiv artist. And later, people started to notice the poses in his illustrations were suspiciously similar to numerous pre-existing artworks ... but only by Pixiv artists. Perfect alignment of body lines, hands, feet etc. And not just once or twice, for at least half a dozen illustrations.
Basically,
there ain't no way all that's a coincidence, and it makes me think he's soured his relationship with Madhouse. He is a foreigner, and
he made Japanese businessmen lose face because of his dodgy work practices. He's a non-native Japanese citizen who was stealing Japanese-made fanart then turning it into a commercial product. Japan doesn't tend to like that, and I'm sure everyone in the industry has put two and two together. In the past, similar cases have had huge repercussions. NGNL's author has so far escaped any problems, perhaps because the art he stole was all amateur stuff, so there are no army of lawyers coming after him.
So ... NGNL 2 from Studio DEEN perhaps?