Umi no Sei ( ), is a and a special character in the 4koma comics. She is a young girl who helps her father run a beachside cafe.
|Umi no Sei|
|Romaji||Umi no Sei|
|English||Nymph of the Sea|
|Favorite Food||Fried Udon|
|Debut||Yuki Yuna is a Hero Club Member Chapter 8|