I'm generally not a fan of isekai. Series with characters from our world reincarnated in a fantastical world or transported there are often quite dull. But sometimes there's a gem among them, like "Solo Leveling" recently. I then hope that other formats also contain such a gem.
"I've Been Killing Slimes for 300 Years and Maxed Out My Level" (what a cumbersome title) is not one of those good series. The stories, which span 24 episodes over two seasons, are primitively simple. You might think they're aimed at a child audience in their simplicity, but the recurring "fan service" (more on that below), a drunk, and a certain amount of violence (albeit never exceeding comic book violence) speak against this. It's meant so seriously and is definitely aimed at both, young adult and adult audiences. Yet there's no conflict. Everything is happily resolved after a few minutes. The solutions are simple, or the protagonist simply uses her overwhelming power. The first season actually consists only of the former loner acquiring a "family," or should we say a zoo? Humanoid dragons, slime spirits, a ghost, an elf, plus friends among demons, goddesses, nature spirits, undead, and so on. At some point, the cast became so vast (and they all came back again and again) that no character could possibly develop a deeper story. If a character did develop a negative, even deep feeling like hatred, it was always resolved after a few words (or a fight). The world in which the protagonist and her Harum/zoo lived was never explained in detail. How it worked, who ultimately lived there. We didn't learn anything beyond the few places and moments where we interacted with this world. But this was always at such a low level of information that we barely knew more afterward than before, just a few new characters.
Technically, it's not much quality either. The character design is still somewhat decent, even if many of the characters seem rather boring and carelessly created. The cheap nature of the production was quickly apparent in the fact that an incredible number of scenes consisted of filmed stills. But even when there was movement, it often seemed clunky. There were clearly not too many intercutting frames. It didn't end with the animation, though. The sound design is also really bad. It happened quite often that images suggested loud noises, but silence prevailed. Sounds were often too quiet, as were the vocal interludes.
Maybe I'm just the wrong target audience. Perhaps the series isn't intended for men at all. Men don't appear that well anyway. Unless they were shown as perverts, debauchers, or violent criminals in a few appearances, they were merely "background noise." To be honest, so were almost all human women. Why, then, the almost exclusively underage female protagonists are repeatedly portrayed in a sexualized form - I don't know. I can't imagine that the female audience likes that. Showing off "big boobs" or being as "kawaii" as possible. That can't be it. Even if the fan service was comparatively "subtle," meaning it fortunately had some graphic and verbal boundaries, it still gave me a stomach ache every now and then. It often went well beyond the typical lolicon innuendo. The fact that there are the usual bathing scenes on the beach and the attempts to knead the breasts of the "better-endowed" young ladies can be classified as "self-evident."
The low point was episode 2.7, in which the main character's (adopted) twin daughters hold a wedding ceremony. Mind you, they marry each other. What kind of sick mind comes up with something like that? There are really many good anime series that end after the standard 12 episodes of a season despite having a lot of potential. Why this really bad one got a second season - I don't understand.
