Tuna Sakuma has been shy, quiet, and used to following everyone else since childhood, hiding behind polite smiles while longing to change. She finally finds the courage to make her porn debut and express herself without restraint—to say what she loves, feel sexual pleasure through her whole body, and share it openly. Now she asks to be tormented as intensely as possible and fully explore the submissive, masochistic side she has always kept hidden.