Recommendation
Due to the different male partners, different locations and somewhat diverse "plots", but vanilla, Knight of Erin is probably accessible and recommended to many. Sure: it's not a masterpiece, but it does its job.
Genre: vanilla, blowjob, boobjob, monster, ...
Story
The story is more creative than many other hentai. However, not much can be said about the actual logic and quality of the story, since various story elements are shown (magic, curses, ...), but none of them are discussed and there is no focus on them. The world isn't really presented either. With every monster you think "Aha, there's something like that in this hentai".
Visuals
The visuals are nice. They are not detailed, but enough. I like the art style, which reminds me of PoRo except that the hair isn't that fine. The animations are clean and smooth. The effects can be improved (e.g. the teleportation looked stupid).
The use of fluids is not excessive, except perhaps the amount of sperm, but that is also within limits.
Characters
The characters have no real personality. Somehow she has no problem holding her body in every situation. Nighthawk just comments on everything, makes fun of Erin, and is just plain useless. Everyone else has far too little screen time to rate anything.
Audio
I really miss sound effects. The music does its job. The voice actors do their thing (not particularly well or particularly badly). Sometimes they walk around with their mouth open or their lips move but no sound comes or they only start talking in the middle of the lip movement. None of this is really particularly disturbing, but it's still not nice
Eroticism
The “plot” is clumsy. Without foreplay or preparation for a "plot" scene, a lot of eroticism is lost. The "plot" itself is nothing special and the genre above describes it well. They occasionally slip into costumes such as bunnygirl consplay, but that is not a main feature. You might expect something like rape, but even though Erin doesn't really enjoy intercourse most of the time, she still enjoys it a little and doesn't object or just suggests it. That kills some of the eroticism for me. But it gets better as the episodes progress.
