While things are pretty hectic in the Central Region, the situation isn't any better on the surface either. After Lucien and his group went down to the magic shell, the big magic storm kept growing, and in the last two days, it reached the Mermaid camp and the Sea Devil.
As the Mermaids are such gentle and sensitive creatures, the dark aura of that storm makes them very apprehensive, and without their Queen and Princess, fear grows in their hearts.
They try their best to hold on until Nea and Saria return, but in addition to that sinister storm, they have to deal with another problem, the sinful desires also growing in their hearts and taking over their bodies.
It's no secret that the Sea Devil houses three Sins, and that's not a metaphor but the personifications of three of the darkest and most dangerous desires in the universe, the very elite of the Demon race.