Point being that it's elaborate and anatomically sound, as far as manga or anime goes, and shows a concrete knowledge of the sadistic play shown. It's not routine or sloppy, it's done by someone who has the sensitivity to know what will tickle someone's mind when watching it, including the balanced level of detail in the environments vs the characters and how they are coloured.

They are managing to keep it on the side of ecchi and not just going hardcore, which tends to just fall back into being routine and boring. Interspecies Reviewers fell into that trap, half of it wasn't watchable even as comedy. Redo of Healer was a masterpiece, but it relied on causing unease or disgust paired with 80s style violence. It's difficult to find a balance with these things. Something that feels "professional" instead of having a feeling that the creators cringed when they made it.