Ninja Slayer sees Studio TRIGGER (or more likely just Akira Amemiya) pursuing the steps of Inferno Cop. Lots of cutout cheap ass giggle animations and not so serious plot. Unlike the former series they sometimes do "regular" scenes but not for very long.
The occasional YEEEEEEEARTTTTT shenanigans, the traditional ninja DOMO introductions and SAYONARA deaths are probably the high lights. Not really recommended.
A gotta give it to TRIGGER tho for having 26 different ending songs by various alternative Japanese bands (mostly rock but even shoegaze 👍).
Based Boris is doing the ED. Fuck yeah!