Kabu no Isaki is a good manga, but all of its aspects could have been better executed. What is most interesting at first is the location and atmosphere, as it is a huge science fiction world where there are large uninhabited spaces. It may seem empty, but it works quite well for an Iyashikei, because, although there are few characters, they are all friendly, which reinforces the immersion without making the reader feel lonely. In addition, the settings consist mostly of natural locations: meadows, mountains, or simply the sky. The artistic section supports the feeling of spaciousness and relaxation, as the backgrounds occupy large pages,and they are very memorable and expressive despite being minimalist.

The problem with the world is that it gets little depth, and by the end of the manga, there are many questions that remain unanswered. Despite all the adventures our protagonists have, the mysteries of the place where they live end up unclear, which is bad, since it was an enigmatic world with a lot of potential.

As for the characters, their designs are nice, especially for the size of their heads and their shape. The cute aesthetics support the enjoyment of the work quite a bit. As for the writing, all of them have well-defined personalities, and it's fun to follow them throughout the story. There are few dialogues, but these feel natural, in addition to supporting the atmosphere quite well, being simple and dealing with everyday topics within their world.

However, with the exception of perhaps Isaki, the characters have zero development. The interactions between them remain static throughout the story, and each character could have been better developed. Considering that the cast is very small, the work with it is rather incomplete, and the characters end up being quite unmemorable. The characters lack conflicts, so they do not necessarily have to be very complex, but there are opportunities to develop them or give them more nuances, and these are wasted.

If I had to choose the best character, it would definitely be Shiro, because, although she is enigmatic, you can see interesting traits of her personality through her actions, which contrast with her relaxed nature.

Lastly, the ending is forced, somewhat anticlimactic, and feels like a big reveal was intended, but without proper build-up. When you finish reading the manga, you feel like instead of being a solid work, it's just an incomplete piece of something bigger. Maybe this was a deliberate decision, but I don't think it was a good idea.

Being a 6-volume work, Kabu no Isaki could have done better things with its characters and world. I recommend reading it if you want to relax. Take it as a pleasant experience without expecting too much.