Kasuga

Kasuga is Ninja serving Uesugi clan, and former subordinate of Sarutobi Sasuke.

Before the current story line, she was sent to assassinate God of War, Uesugi Kenshin. But when she saw Kenshin, she fell in love with his beautiful self immediately.

Since then, she became Kenshin's "Beautiful Sword" and his most trusted warrior.