If you're looking for manga similar to Koko ni Iru Suiren, you might like these titles.
The state of progress is one where one must look to the past in order to protect the future... but what must be done for the present?
This is a collection of somewhat odd sci-fi short stories, including the title track about two men shrunk to the size of dust particles who attempt to rescue a man with tuberculosis, and the girl TB germ who tries to stop them.
Hajime is a wandering samurai, who carries a musori sword and is aiming for the top. His goal is to have a fight with the famous Muichi, but upon his arrival in a village his sword gets stolen. And to top it all Muichi turns out to be…
Includes the following chapters:
Sci-fi drama about humans, inspired by Prometheus, struggling against their given fate by using fire to end the ice age.
A man from the slums faces his doppelganger from the other side of the tracks; three guests visiting a hot spring are reminded of their past sins by a magical ringing bell only they can hear; stranded on the moon, an astronaut is stuck within a crater, sustained for a century by a mysterious life-giving gaseous fume the moon crater expels. The Crater is a collection of self-contained short stories, ranging from horror, mystery, to science fiction.
Mitsurugi Kai is a wizard that must pass a test of character. He doubts himself due to his past. His test is to retrieve paper charms by himself. On his way, he meets Kohrogi Orine who is a fledgling singer who also doubts herself.