Apocalypse: I Became the First Island Lord by Crafting Tools by Hand

[Flood apocalypse] [Global ocean] [System] [Handcrafting enthusiast] [Mobile island] [Cute octopus pet] [No romance, but allies; the heroine is the only permanent human resident on the island, everyone else is a visitor.]

(This novel is currently being drafted. The blurb will announce when daily updates begin.)

Floodwaters engulf the world, and An Yu survives thanks to a storage bed she had custom-made.

She drifts across the sea on the bed, surviving the apocalypse with the crafting tools and out-of-season clothes stored inside it.

After binding to a System, she unlocks the ability to talk to marine life and finds her first adorable pet, a little octopus.

The octopus brings her a glowing piece of coral as a gift between friends.

An Yu decorates the octopus's home with the coral. But when the coral is submerged in seawater, it keeps growing until, a month later, it has become a small island.

An Yu becomes the island's only human and its owner, and happily moves there to start a new life.

The little octopus also invites its friends to settle beneath the island. She enjoys a peaceful life fishing, growing vegetables, gathering supplies, making tools by hand, and trading with others.

From time to time, she invites trusted friends to stay on the island for a few days.

The island grows larger, her circle of allies expands, and major factions emerge. An Yu also gradually draws closer to the truth behind the apocalypse...