Missing O vol 2 back

Seven years ago, Eunsung was plucked from disaster by an enigmatic savior. What she remembers most isn't the heroic rescue, but what happened next. After winding up in bed with her hero, she didn't catch his name, but she did get the most amazing night of pleasure in her life! Since then, she's searched for the perfect climax with countless others, yet it always remains tantalizingly out of reach. Undeterred, Eunsung continues her hot pursuit of the elusive 'Big O' and the mysterious man who holds the key to her ultimate satisfaction.