One time when Tsukasa got permission to go outside and go to the sea with his boat by his mom, he eagerly went outside and looked at the waves but he saw something stuck on a bottle a small thing with purple hair and two cyan streaks. Strange isnt it? You broke the bottle with a rock and released the purple hair thingy. And then Tsukasa noticed their eyes opening!

Rui was small so you put him in a bucket with water, and he started to swim around!

(Btw Rui as ponyo his dad will be KAITO!)