[Monochrome Inu (Onion Soup)] Senki Zecchou (Senki Zesshou Symphogear)

Hibiki, the horned dominatrix, forces Chris into a brutal training regimen that turns her into a masochistic slave, using drugs, bondage and relentless torment to reshape her body. The intense power play escalates as Hibiki commands Chris to pleasure her, reveling in the enlarged breasts and submissive responses that dominate the scene. The climax builds with a perverse gratitude expressed in the midst of the cruel alteration, leaving the viewer questioning how far the domination will go.