It’s fantastic!
…? Oh! You wanna know why?
Well, it’s a faithful adaption of the manga series. Sure, some .5 (i.e. bonus) chapters were omitted and some scenes were altered or shown in a different order than the manga, but I assume it was to make the season more cohesive, avoid copyright issues (The manga’s filled with one-off or minor characters whose appearance references fictional characters from other companies. Heck, I’m surprised Ichimoku Samazu [Fake Cyclops] and Jube Namimaru [Fake Wolverine] made it into the anime unaltered.), or save time.
The companies behind the series, Toho and Bones Film, had a lot to pack into these thirteen episodes and I think they did a great job keeping the overall feel and heart of the original manga.
Adapting a manga can be difficult when it’s a currently running series. Which scenes are important and what aren’t, making filler so as to not catch up with the source material, and having to budget anime production costs for a series you don’t know how long it’ll last are just some of the problems that creep up. Fortunately, that wasn’t the case for My Hero Vigilantes’ anime.
The manga ended years ago, so the animation team knew exactly how long the series would be and budgeted its cost accordingly. It’s probably a big reason the animation looks so darn good. They know how many seasons they’ll have and can work within that limitation.
Mammoth Base Opera Castle 