SHKD-885 Female Transformation Fallen Investigator 2: Nagase Mami

Chihiro and Chihiro infiltrate the underground organization led by Bison, which brainwashes women and sells them as slaves. However, Chihiro returns as a corpse in a gruesome state... This mission was supposed to end with their marriage. Chihiro, seeking revenge for his beloved, transplants his own brain and heart into Chihiro's body. Through feminization surgery, the two become one entity, 'Chihiro,' and head back towards Bison...!!