Water Bound [Diabolik Lovers]

Sirena Komori is Yui's younger sister who was adopted by Seiji at the age of six. Back then she was just a normal human child who enjoyed the ocean a bit too much. One day, Sirena ventured a little too far out to sea and got swept away by the current. She almost lost her life. However a siren rescued her but placed a curse on her soul for trespassing on it's island. This curse binds her to the ocean by day, making her an artificial mermaid, and releases her at night when no one is around.

What happens when she joins Yui at the Sakamaki household?

Will her secrets be revealed?

What truths will unfold?