[Lupin has done a small piece of everything in his home, just not to the same extent as many of the specialists in Luceti. The mission on the ship was little more than a transport run, but it wasn't unfamiliar territory. Lupin knew boats, and it was always a joy for him to go sailing.

He disliked the memory of the kraken and its wrath, but he kept himself calm]

A kraken is an exceptionally large octopod. If you want an idea of how large, take a minute to imagine the largest squid you can think of.

Then, you make it bigger.

That's a kraken.