That manga is just the right amount of cheeki-breeki. Not a disappointment like Made in Abyss, which started promising, but became about shit jokes and beating the shit out of children.
Back in the day when tribespeople had to hunt their totem animal, hunters usually had to undergo a cleancing ritual after that. Violation of some taboos could be dealt with in same way. Not unlike modern practices of repentance and penance. So it's a maybe. But that would requre him to at least...
Regarding the first part of your message, it's not that unrealistic. He is from a society that is more advanced than ours, but not too advanced. He wasn't sent to a definite planet, as far as I understand. His ship was to fly and wake him up from hybernation if habitable planet is to be...
While he was flying, Earth had invented hyperdrive of some sort. They came to this planet, terraformed it and decided to play god to see how civilization works or something. We are the Ancient Aliens.
Of cource they did. They have trains and cameras for fucks sake. Then again, it raises a question why are they so flabberghasted by a porrige with fish? It's not high tech, it's something perfectly possible on their technological level.
Imagine if tomorrow a flying saucer lands in some big city...
I don't get it. Sure, we can eat a lot of different stuff. But carnivores should have much easier time digesting meat, which can be raw or even rotten. That's an important source of protein we couldn't fully utilize before the invention of fire. And herbivores should be getting much more out of...