Lacus is a fishing village located on the eastern coast of Lake Concors. It is populated mostly by the
Halcyonus, who are close cousins of the Cæruleans. Eva Nine, Muthr, and Rovender spend the night at Hostia Haveport's family hut in Lacus, before their planned trip to Solas.
Eva Nine watches the sunset over Lake Concors.
Eva Nine watches the human fleet invade Lacus.