くノ一忍法伝 外伝 忍妖女（しのび） (1999)

Original title: Kunoichi nimpoden: Shinobi kunoichi garden

Passion is Thicker Than Blood!

Mizuho Enomoto debuts as Myst, one of two beautiful ninja sisters who save Iyori, a young samurai on the run. Myst and Bell have a secret, though – one they’ll do anything to protect! As they nurse Iyori back to health, love blossoms – not just between two of them, but between all three! But when Myst’s mentor, the demon hag Ogen, shows up looking for a deadly revenge, their forbidden paradise could be shattered forever!