Lupin Zero ep1
Seen a few negative comments about this, but I quite liked it - the image downscaling is ugly, but the actual show is fine. I’m not sure the writing is necessarily that much better than Part VI, but it really benefits from being an ONA, I think - you can see the amount of time and care that’s gone into the animation. I would rather that they’d spent a little more time setting up the characters, particularly Jigen (maybe this episode should have established how he acquired that gun in the first place?), but there’s something to be said for getting straight into it, I suppose.
Romantic Killer ep1-3
Seems well done for what it is, but whether I'll watch the whole thing, I don't know. I do like the design for the main character though.