That day, Clarice died.
Her faithful soul was supposed to go to heaven.
But, she had a regret.
"God... even devil! Please let me meet that person once more!"
After that, her soul wanders and arrives at a mysterious woman.
"Okay, I'll grant your wish. However, there are two conditions. If you don't follow them, you will become water and dissolve."

[Translated from the official site]