I watched that thar Bastard man.
Full disclosure: Bastard! was kind of my guilty pleasure back in late high school/early college. At the time, anime was sparse, and my girlfriend had Bastard!, the six episode OAV, bootlegged on some VHS tapes. And we both really enjoyed the show! The main character was a... bastard, and we both appreciated how it was irreverent of typical fantasy/anime tropes. We both agreed that this was the guy that would just hit Sailor Moon with a rock when she was winding up to do her latest two-minute attack animation. And, while we also both agreed the show was problematic (to say the least, like, the big "love of his life" character is an adult [hooray] who he had raised from childhood to be his lover [boooo]), it wasn't like anything else we had ever seen. And it was pretty! So a good time was had by all.
Now, the thing that made Bastard great (in my opinion) was that he was a jackass of a hero, but still a hero. This was new to me at the time! He could save the day, but he wasn't some stuffy Superman. He made quips. He defeated villains while they were monologuing. He made it clear he was not conquering and/or saving the world for reasons that were good or bad, simply that he had his own wants and desires and would see them fulfilled. He was a hero, but a selfish hero, and that was new or novel.
Nowadays, however, there is nothing unique about that. You want a selfish hero that makes quips, you have the last two decades of the Marvel cinematic universe. You want a selfish hero that wants to turn the world into his harem, you have literally every other anime protagonist. There's nothing "special" here now, and in the absence of that, you just have a bunch of weirdos flying around with giant shoulder pads.
But... okay... the six episode OAV did seem limited. Maybe expanded to further episodes, Bastard! can fill in some of the blanks, and be better than all the other franchises that stole its thunder in the intervening years.
WRONG
As someone with some measure of nostalgia for Bastard!, I did not want this to be the case, but let's be clear: Bastard!: The Netflix Original Anime (or whatever) blows goats. It expands the initial six episode story to something that is going to be at least 13 episodes (no, it does not get "as far" as the OAV inside of its first season run of episodes), but adds nothing. I presume this is all still based on the same original manga (which I have not read), but knowing the OAV and then watching the expanded anime proves that brevity is the source of wit. And that's me saying this! A guy who has managed to wring a whole paragraph out of the concept of "cynical hero"! The OAV obviously identified what didn't need to be there, and cut it for time. The anime has no such constraints, and spends whole episodes just puttering around with nonsense like "oh maybe Dark Schneider is going to flip out and kill everybody in the second episode". Newsflash, dumbasses, no one would ever buy that happening, and it adds nothing to the character! We already know he's a bastard! It's the title!
For anyone that is familiar with the OAV, and wants to know if anything relevant was added: we now include two new "sub" generals before the vampire fight, and, surprise, they're both women wizards who eventually fall for D.S. He metaphorically has sex with both of them, but not for realsy reals, because of whacky hijinks. Have to keep that character that may as well be described as a literal sex god virginial for some reason. Other than that, it is exactly what happens in the OAV up to D.S. tearing his own heart out, and nothing more. We'll save the conclusion to that cliffhanger for Season 2.
And you may ask "well, if everything else is the same, how does that more than double the episode length"? Well, the fights have been expanded to Dragon Ball Z-esque lengths of posturing and one-upping attacks. And, as an added bonus, with all the "new attacks", there is a constant, eternal audience of helpful townsfolk, knights, and ninja that explain every attack and why it is risky and how this fight is going to go but OH MY OZZIE it doesn't go exactly that way and things change from the narration of five minutes ago. Who would have expected such a thing!?!!?
Anyway, tldr of Bastard!: it was already a problematic, dated kind of show, and this new expansion did nothing to fix the already preexisting problems, and added a whole host of the worst excesses of the genre. Do not recommend.