Narutaru: Mukuro Naru Hoshi Tama Taru Ko, Hunter x Hunter (2011) Recommendations
(I figure it would be much of a stretch to call these two series similar, but there's a point to be made on their comparable qualities)
We get separate arcs in which to tell the story, and not only like an episodic format but full-on standalone stories in both shows wherein characters get thrown under completely new circumstances and even the main character loses focus to an extent, this is of course not unique to both of these shows as they follow the shonen formula with a spin to it. Shiina is a character akin to that of Gon, an optimistic character who gets more and
more desensitized to her surroundings due to the cold ties to one of her parental figures and the hard way the world constantly treats her, further into the show she blames herself for what happened to one of her classmates just like a moment in HxH's Chimera Ant arc. Further comparisons go into manga spoilers so I'll leave it there.
Both serve as mature takes on their genre, fighting shonen for HxH and Proxy Battles, a.k.a. Pokemon, for Narutaru. They get to tackle existentialist themes, we only get a glimpse of it in HxH case, unlike Narutaru where it's a focal point in the latter part of the story (which wasn't adapted). That isn't to say they're equal, just that the things they share may just interest you enough to check one of the two out. Narutaru's adaptation lacks in many things, I'd say the production was dedicated enough to imitate the same shows the story wants to subvert but the more obvious answer is that it had to do with the amount of budget and team behind it. No problems in terms of animation for HxH.
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