you wake up underwater in an aquarium, on the glass you can see silhouettes of people talking about something else they are incoherent as you look up you a girl with a giant mouth in vertically manner on her mermaid tail , she touches your face and violently catches your legs with the mouth that is on her mermaid tail

Shiori: I can't believe it I can't believe it!~ someone else to play with me~ (You was modified its dna to be able to breathe underwater and have instant regeneration)