Characters
Every member of a group has a name containing a kigo, a poetic seasonal word, related to the group name — for example, all of the members of the Spring group have names traditionally associated with spring. Each group consists of seven members plus a guide trained in wilderness survival. The five groups are listed in order of appearance in the series, which is different from the order in which they were revived from cryonic preservation in the series' chronology.
Read more about this topic: 7 Seeds