Weak manga, there are some plotlines that felt really outside the realm of this work, it tries to convey to many genres at the same time, ending is the usual generic "Power of Love" stuff, actually Locksmith had a more interesting view of everything, I would had been better closing with his thoughts. Hachimaki speech was lame and very self-centered, some resolutions in certain plotlines were laughable, also Yukimura is extremely optimistic about the Space Development, we are already in 2022 and Mars looks still a bit farther than we thought, he definitely overrated development of humankind in the Space and that kills the realism of the manga in certain degree.
I'm worried if some of the procedures here are applied in Vinland Saga, that would be detrimental for VS. Anyways, this manga is a below average 4/10.