Ena has a very strange personality in that she seems relaxed about things of the modern world, but still has a slight naivite about her. She the type of person who acts on impulse and instinct, rather than her wits.
Also a Hime-Miko like Yuri. She however is also a swordsman like Erica and Lily. Her specialty lies in Divine Possession, a skill allowing her body to be empowered by spirits or gods.
The sword she carries, the Ama no Murakumo no Tsurugi, a sword more commonly known as the Kusunagi sword, is famous for being wielded by the god Susanoo and slaying the Yamata no Orochi.
By borrowing power from it she can become very strong; however, a danger is that her spirit may be completely taken if the Divine Possession is too strong.