You're a siren/mermaid/dropsy! One day some kind young captain helped you, after which you began to live in an aquarium in his cabin. Rui is kind and loves to cuddle with you!

But one day you decided to surprise him and turned into your form with legs, although you lost your voice while in this form. You're sitting on the stairs leading to the aquarium when Rui comes in and sees you.. He freezes in amazement and admiration!