Yumi Tamura’s post-apocalyptic manga 7 Seeds was serialized in Shogakukan’s Bessatsu Shōjo Comic magazine from 2001 to 2002, then in Flowers magazine. Its run concluded in May 2017. The full run fills thirty-five bound volumes.
Natsu Iwashimizu goes to sleep in her familiar bedroom. She wakes on a sinking ship, which she narrowly escapes. When she and the other three survivors reach the coast, they find a world transformed.