Its way more interesting and good than it looks. You can think its a kid anime but it's not, at least not in the way a kid anime should be! Although this anime has some flaws like missing more weights to emotional scenes, slightly off in story execution or kinda rushed scenes. However the anime perfectly executes and purposes and never lost sight of the goal unlike some other animes which shows a primary goal but in the end, doing another thing as well as showing the ending with half baked scenes, unfulfilled results, different outcomes for different efforts being put in. I like the art,character design and the world building

It is definitely a hidden gem and I can see it has been overlooked by most people. I recommend it of course to watch it fully. Although the spaceship design would have been more like scifi movies, well, that was good also. It deserves at least 8/10