Blood Sight

Blood Sight (血観, Chikan) is a powerful Eye Magic and Caster Magic available to those of the Akarōshin Clan, although they are all extinct besides Cecil Akarōshin, who voluntarily got rid of these eyes.

Description
Blood Sight is a form of Eye Magic which is present within all those who follow the teachings of the Akarōshin Clan. It is an embodiment of an individual's negative emotions turning outward, using the eyes as a medium in order for a wide variety of effects to be present. The exact mechanism hasn't been disclosed by Cecil, however it works on the basis of emotion-driven Magic (触れる魔法, Fureru Mahō; Literally meaning "Emotionally Driven by Magic"). Due to the phenomenon of magic existing symbiotically with a person's biological and neurological systems, it is evident that changes in either system through an emotional or physical upheaval can directly affect the way magic works. The same applies with this peculiar eye magic. Upon experiencing significant emotional or physical trauma, the magic within his eyes responds with an enormous surge, thereby changing the color and luminosity of his eyes to an extremely bright red. Because it worked on the premise of an individual's emotions, each user of the magic had a different effect associated with their own Blood Sight.

Cecil's Fire of Celebration
Because of Cecil's frequent temper, among various other factors, the ability awoken by Cecil's eyes was known as Fire of Celebration (祝融, Shukuyū; Alternatively meaning "Disastrous Fire"). The flames produced by this particular eye were, unsurprisingly, a fierce crimson. From one record left by an elder clansman, the flames of Cecil were described as "I am...lost for words. It is as if karma possessed a physical form. That is the power of these flames!" Their color was reinforced by an extremely high amount of power. While very few flames exuded from the crimson aura that surrounded Cecil upon the conjuration of these particular flames, it was undoubted that their potency was unrivaled. Within every single centimeter of these flames was an equivalent to a concentrated version of ten centimeters in ordinary Fire Magic. Truly, this fire was one worth celebrating. Alas, the power of this fire did not bode well with the reckless attitude of Cecil. While clearly a demonstration of their sheer power, the use of this fire for an extended period of time under extreme emotional trauma can cause them to burst out of control. Absorbing the entirety of the user's magical energy, they erupt violently, seeking to burn everything that they lay their hands on into nothing more than ashes.