Sengoku no Kuroyuri ~Futanari Hime to Shinobu Shoujo-tachi~

An age of war. A princess turned d*ck chick by a suspicious drug.
Unable to resist her incessant ever burning carnal desires,
she violates girls left, right and center. Losing herself in the process...
Protected by her loyal ninja guards she makes her way to a new land.
Where she meets another girl, with a body like her own.
How will the ninja girls act in response to the startling discoveries!?

[From DLSite English]