On the surface, these anime are similar since they are about submariners fighting for humanity against lifeforms that rose from the sea, and they both provide the thrill of naval warfare with plenty of excellently-animated submarine scenes. But at a deeper level they are really about the enemies, born into the world with intelligence rivalling that of humans, as they struggle to understand their newfound emotions and find a moral way forward. Aoki Hagane was surely inspired by Ao no 6-gou, but offers its own take on these themes.
Both are produced by Gonzo and have the character design of Range Murata.
Deep, beautiful, mature, and futuristic series of the adventure, action, and sci-fi genre.
Both anime have a specific setting (air in Last Exile, water in Blue Submarine # 6).
Also, in both the main girl is a redhead.
The similarities between the 2 series are as follows:
- An apocalyptic version of earth set in the future
- Both series rely heavily on the male and female mech pilots
- Humans are fighting another species for control of the earth
If you liked Darling in the Franxx for the reasons listed above, then you will like Blue Submarine No. 6 and the mysteries that are unraveled throughout its run time. The CG of Blue Submarine No. 6 has not aged well at all, but if you can get past that you will enjoy the series.
There are similar character behaviors and personalities along with a similar depressive, serious atmosphere overall. Additionally, the sci-fi-ish, science gone wrong backdrop is present. Besides the general plot being different: Strait Jacket is far more gory and Ao no 6-gou has a greater color scheme.
If you thought Blue Submarine was cool for it's use of jazz music during action sequences, you'll enjoy Bebop's fight and flight scenes. However, I cannot recommend Blue Sub to fans of Bebop, because Bebop's soundtrack is far superior and overall Blue Sub will disappoint in this department.
Although dealing with completely different subjects, both animes have a nice mix of action and things that make you think about; both are (somehow) sci-fis. And: they are on a similair graphical level (although Blue Submarine No. 6 sometimes uses CGI in a not too skilled way).
By the way: both animes exist as single movies and 4-part OVAs.
The idea that technology has doomed mankind's future by not respecting nature is approached in both animes. In Arjuna, polution, a by-product of our advancements in tech, is damaging earth, hence, it is up to Juna to heal the planet. Meanwhile, in blue sub. someone tries to protect the environment by eliminating mankind.
They show differents approaches on how to tackle the overexploration of resources, and lack of respect we have by our planet.
Blue Sub takes place on a water covered earth while Mars Daybreak takes place on a water covered mars. Both are in the future somewhat. Both take place primarily in the oceans on submarines. Both have mecha fighting under water. Both have talking creatures that aren't human including but not limited to talking cats and dolphins. Both also leave alot in the open for the viewer to decide. The overall plot is also fairly similar. If you like one you are sure to like the other.
Both of these are similar in the fact that both are dealing with outside and non-human lifeforms that want to destroy the human race. In both world because of this, the oceans have risen to swallow up most of the earth.
Both deal with the philosophical question, "Do two evils make a left?"
Incase my poor sense of humour is lost on you they both look at the stance of the lesser of two evils and whether or not an evil action can be good
Both have the villan with a god complex who believes that mass murder is the answer to problems of the world. In R.O.D., the villan creates clones while in Blue Submarine he evolves animals to the level of humans.