When will the new Yin and Yang God Senhime come out?

When will the new Yin and Yang God Senhime come out? Recently, the official CG about SSR Senhime has been exposed. This kind of god should officially meet the players when the next version is updated, that is, on June 28th of 10, that is, when the new version of Eternal Sea is about to open. According to her background story, the positioning of this type of god is likely to be auxiliary, and the specific skill effect needs to wait for further official introduction and disclosure.

What is the background story of Senhime, the teacher of Yin and Yang?

The sea of eternal life in the romantic legend used to be a paradise for mermaids, but now it is condensed with chunks of ice. How does the mermaid princess who sticks to her home lead her people to break through the desperate situation?