Akio presented himself as a polite, amicable and proper adult and parental figure to Shiki when first introduced. In truth, this is a facade, Akio was in fact a manipulative, self-serving, greedy, and highly ambitious person with absolutely no morals, willing to exploit Kemono powers for his self-benefit, convincing Kumi of partaking in inhuman experiments with the intention of producing golden silk, all under the pretense of giving her and Shiki a means of self-sustenance having her go through a torturous experience in order to create a hybrid capable to producing it.

Akio feels not the remote sense of remorse or guilt for his deeds, and in fact, relishes on what he had achieved thinking he made such a groundbreaking discovery that it would catapult him to unparalleled historical fame. He also lied to Shiki regarding his mother's condition and manipulated him into thinking he meant the best for both him and his mother. Calm and patient he kept avoiding the issue, whenever asked, knowing that Shiki would eventually give up on the matter.