Story: This anime is episodic and unlike the first season which developed the plot throughout the season, the second season only contributes to the main plot in the last two episodes. This is perfectly fine as Kekkai Sensen at its absolute best is 1-2 episodes per arc. The simplicity of each arc and how it fleshes out each character can be described as efficient. The pacing never feels too slow, and even when its going too fast, it plays into the theme of a chaotic mood that is perfect for the setting of Hellsalem's Lot. While the stories aren't the best, they pave the way for something more important which is leaving the watcher at awe with the world and how the characters interact with it. Compared to the first season, I feel like the later episodes weren't bogged down to fit the whole black/white arc and that I preferred how each of the episodes had its own "Hero's Journey". To criticize Kekkai Sensen for this format seems absolutely ridiculous, as fast pace is important to the overall mood of kekkai sensen and plenty of successful anime have employed the same method with conflicts being introduced and resolved within the same episode.
Art: The animation is like the first season. Stylistically, the style matches the fast paced anime style. The action scenes look fluid and there's no real ambiguity with what's happening. However, the animation doesn't stand out as much as the other strengths, and there are a lot of still frames that look horrendous with regards to proportions.
Sound: First season had one of the best soundtrack in modern anime, and the second season also delivers. The soundtrack fits the mood and the pure variety is enough to be impressed by what Kekkai Sensen brings to the table in terms of audio. My only complaint is that the soundtrack doesn't seem too big of an upgrade from the first season, and I really miss the old ED :(
Character: Kekkai Sensen has static characters, but that doesn't mean these characters are bad by any means. Many of the episodes in Kekkai Sensen were meant to not develop already established characters like a lot of these reviewers claim, but rather to give insight to the nuances these characters display. Chain during season 1 was a straight laced no nonsense tough girl, but in season 2 she feels infinitely more human and personable. Steven was cool in season 1, but in season 2 he feels infinitely more dangerous and ominous. These are just a couple of examples, and while some of these characters still come off as flat, there are enough characters to like that aren't cookie cutter tropes.
Enjoyment: Since this is the etc option of MAL, I'll just talk about the best quality of Kekkai Sensen which is the fact that the setting and world building are top notch. While Kekkai Sensen isn't special in terms of the metrics we measure regular anime, the amount of cohesion that fits into the universe makes this a real treat. The episodic format, multiple static format, high tempo music, and even the animation all play into a beautiful romp committed to crazy characters in a equally crazy world and their hi jinks.
