Inner Demon Asagi Igawa

The ability to switch into a demonic form is a rare ability that, potentially, all Taimanin could obtain. When mastered one is able to activate and deactivated it by will, it can increase damage reduction, speed, strength and even the power of the individual Ninja Arts. The gain is indeed drastic enough, to make a Taimanin somewhat dangerous, even to a demon noble. While transformed a Taimanin change hair, eye and skin color while also gaining demonic features like claws, horns or sharper ears at times but like Ninja Arts the transformation is individualistic.

However, the Inner Demon transformation is very dangerous, using it too long can result in the total and permanent corruption of the mind. In fact, the Inner Demon, can be quite vocal and talk to the Taimanin within dreams or even awaken states. While transformed, the personality shifts to that of the Inner Demon, which makes Taimanin more violent and unhinged. More so than just a "shadow" within their own mind, the Inner Demon also has knowledge and wisdom the original user doesn't have access to, like knowledge about the Mother Ocean and Aion. On top of that, Inner Demons harbor a deep dislike for humans including their hosts if they do not give in to their powers. They will often suggest using their power and give fully into them, which results in the human mind being lost forever.

When, an Inner Demon views that the mind of their host is too broken and gave up fighting, they lose interest and disappear.

Inner Demon Asagi has purple-lavender skin, with golden yellow eyes, and very long white-lavender hair. She wears the same purple Taimanin battlesuit as Asagi.