Is It Wrong to Try to Pick Up Girls in a Dungeon? Familia Chronicle Episode Asfi, Vol. 1 (light novel)

Synopsis

Asfi is never not busy, so it takes some doing to get her to accept a quest to investigate a mysterious ship that keeps showing up recently. But when she, Hermes Familia, and Lyu board the vessel, they are attacked by a horde of ghosts! They endure an endless stream of inexplicable phenomena while the ship takes them to a place that shouldn't exist―Asfi's lost homeland.