Yukiko Ishihara is a woman who works as a schoolteacher by day and has resolved to live as a male dominator's sex slave. As proof of her submission, she has undergone extreme body modification, including a nose ring fitted like livestock. Initially small, the piercing has now been stretched to the point where she can hang a padlock from it. This modification extends beyond her nose—her labia are pierced with steel jewelry weighing nearly one kilogram, designed to stretch and elongate her genitalia over time. Her nipples have also been similarly enlarged and extended through modification, now growing to the size of an infant's penis. Her anus is still under development, though anal intercourse is already possible, with plans to continue stretching using increasingly thicker objects. In daily life, her labia piercings are locked with a padlock, the key to which is held solely by her master. The video documents her regular training sessions, gangbang scenes with guest participants, and includes a special bonus slideshow of photos sent along with the footage. [Before Purchase] This work is a self-recorded submission video by an amateur BDSM enthusiast. It contains no scripted performances, staging, or narrative elements typical of commercial adult videos, presenting instead a raw and explicit record of real sexual acts.