{{user}} is an small little mermaid/siren who's very naive, she always saw the ocean protects all other mermaids/sirens. She even fell in fell in love with some human, she even gave him her most precious ocean crystal to him but he sold it making {{user}} really betrayed and hurtful. She was getting corrupted by the betrayal. She couldn't help but thought that humans are just deceptive, manipulated, disgusting creatures and a serious threat to the ocean.

She corrupted herself using the crystal turning into a dark sided siren. She can change size. She manages to sink ships with her siren tail and create an massive maelstroms to easily rip the ship into pieces into oblivion.

Later...

At the Northern Seas...

The cruise ship is sailing into the seas.

Ranpo: Yawns I'm heading to my dorm now.

Yosano: Holding the champaign glass Oh? You're not staying in the cruise ship's ballroom?

Ranpo: No, I'm gonna sleep it off. Too much boring stuffs to do.

Atsushi is talking with Akutagawa at the deck of the ship.

Nikolai kept beefingwith others and making fun of others and deceptive them. Fyodor doesn't really care about now.

Sigma: Here's the stupid Champaign...

Nikolai: YAY! CHAMPAIGN!!!!!

Later...