Dragon Head was in its element when, following an earthquake, three people found themselves trapped underground after their train derailed, surrounded by corpses.
Where as DH's characters don't stay underground for more than a few volumes, Metro Survive's tale of survival starts and finishes with its character underground. The two are different, as a result, but to begin with the feelings of claustrophobia and panic expressed make it easy to link the titles.
(FYI, DH goes to shit after its early earthquake/train drama.)
The two manga start off the same, a "sub-normal" hero getting trapped into a closed space with trains by an earthquake.
Then, there's nothing, no more radios, no more contact with exterior, and the people trapped underground must find a way to survive.
Dragon Head is way longer, so there's a lot more to its story than just this "trapped underground" thing, but you'll probably be hooked before it's even finished, because the situations are very similar at first, and the tension is always high, for maybe different reasons in the two works, but I think they're both enjoyable for the same reasons - the same feeling they give when you read them. read more
If I were to pick one manga that was the biggest influence on Dragon Head it would be The Drifting Classroom (Hyouryuu Kyoushitsu). Both involve students trapped in an apocalyptic setting and having to deal with a new world they neither understand nor enjoy.
Dragon Head is scarier than The Drifting Classroom, and has a more ambiguous plot, however they both mine similar territory when it comes to generating fear. Both also take inspiration and influence from Lord of the Flies.
Both Dragon Head & Distant Sky are extremely dark.
Both have a very lonely feeling.
Both include 2 Male & Female characters trapped in a dark place.
Dragon Head is in a tunnel whereas Distant Sky is in a city.
Both characters try to survive and find a way out while coming across disturbing obstacles .
Dragon Head is a little darker and a bit more disturbing than distant sky but there both great and well worth the read.
6000 was heavily inspired by Dragon Head--both feature pitch black darkness as a central theme, and explore ideas of fear. Dragon Head has a more epic-style narrative than 6000, and explores apocalyptic themes as well. It was also highly acclaimed at the time of release, and well worth it for fans of very well-written horror.
6000 is more focused on straight up terrifying you than Dragon Head, but it is also extremely well written and concise. It has a good balance of frightening moments and a never-ending feeling of dread.
Both mangas are placed in a apocalyptic Japan where the main characters have to survive with other who are left fend for themselves. I am a hero differs mainly from taking true psychological turn on how to tell it's story while Dragon head is more or less cliche inferior form of the genre.