Most of humanity has been wiped out by mysterious dark monsters known only as "Phantoms." Four survivors, who may well be the last of the human race, have found one another and are sharing a quiet, peaceful ...

It all started out with Jain, an old man. Only a few know the truth of his trauma. One day, Jain encounters an unconscious bloody girl on the sidewalk... and decides to carry her home for further care. But w...

The Tokyo area has been hit by a gigantic earthquake. In the midst of this chaos, Akito and Yumi meet and together they start traveling through the city in order to survive.

More than ten years have passed since a means of transporting individuals from Earth to another world was developed. High school student Kakeru Satomi was taught survival techniques and wisdom by his mountai...