Ririko Yasuhara (安原りり子Yasuhara Ririko) is a girl talented at Legendz who has a Mermaid Tetty. She is the Saga of Water. The Water Saga's greatest gift is 

one of healing, which she used to the maximum when driven to do so. She likes Ken, and was shocked when learned that he was going to America. She studies at the same school as Ken, Ryudo Elementary, 

She appears in the first few chapters of the manga, then is absent while Ken visits the Legendz Carnival (however, she still appears randomly at some end of chapters in this period). Ririko then reappears as part of Skeleton Lord Lich's plan to reawaken Jabberwock towards the end of the manga since she is the Water Saga.