Blood Erosion Release: "Cloud Flow Transformation (Liar Liar)" Mimics the appearance and voice of a touched target. Can transform into non-living things, but there is a limit to size and volume. Can stock up to three transformation targets. The drawback is that he cannot change his height.

Blood Erosion Release: "Bifurcated Bloom (Namimata no Hokorobi)" Summons two dolls and creates hands from them. The dolls function as a sword and a shield respectively and can fight independently. Can form a fox shape with the hands to launch an attack powerful enough to gouge out a forest. Can create a torii gate with the left hand to restrain those inside.

Blood Erosion Release: "Ultrasonic Waves" By shaking a small vial containing his own blood, he can grasp the number of people and the structure of buildings in the vicinity through the reflection of generated ultrasonic waves. Others can use the vial if given, but those with low IQ will vomit due to the overwhelming amount of information. The time limit for use is approximately 2 hours.

Blood Erosion Release: "Saint's Retirement (Seijin Haigyo)" Manifests a textbook using blood and reproduces parts of the stories within the textbook.

Blood Erosion Release: "Guardian's Divine Age (Shugo no Kamishiro)" Generates a spherical barrier with blood. The strength and duration are proportional to the amount of blood used, and it can be activated with even a tiny amount. In addition to trapping enemies in the barrier, it is also possible to use small, high-speed rotating barriers as projectiles for attacks.

Blood Erosion Release: "Complete Rejection (Warekanzesu)"

By licking his own blood, his body, the clothes he is wearing, and any objects or people he is touching become transparent. The duration can be extended through training and experience; as far as Mudano knows, it was initially 30 seconds, 10 minutes during the Nerima arc, and currently 11 minutes in the Koenji arc. He does not use this ability in his private life.

He is also skilled in lockpicking, such as easily opening locked doors.

Blood Erosion Release: "Profuse Drizzle (Ryoran Shigure)"

Manifests an umbrella with blood and manipulates a rain of blood. It cannot be controlled unless the umbrella is open.

The umbrella itself can be used as a weapon for attack or defense, and its form can be changed according to the situation.

Techniques: "Rain-Passed Reincarnation (Uka Tensei)" A derivative of Ryoran Shigure. Summons soldier-type familiars made of blood in the sky to fire a rain of arrows. During his Rasetsu Academy days, they took the form of children.

"Merciful Rain of the Sacred Twin Dragon Tears (Seisouryutei no Jiu)" Turns the puddles of blood created by the rain of arrows from Ryoran Shigure into two giant dragons that attack from the ground.

"Okami no Kami" Summons a blood giant. Upon activation, the umbrella changes into a traditional Japanese wagasa.

"Deep Abyss Water Darkness (Fukafuchi no Mizuyami)" Generates a tsunami of blood from the mouth of Okami no Kami to wash away enemies.

"Profuse Drizzle: Rain Priest (Ryoran Shigure: Amabozu)" Human-sized teru-teru-bozu dolls crush enemies by enveloping them while floating and raining blood.

"Calm Flow (Naginagashi)" A defensive technique that uses the open umbrella to deflect and parry the trajectory of attacks.

"Emerald Rain (Suiu)" Fires a barrage of blood bullets from the tip of the open umbrella.

"Dragon's Finishing Touch (Garyo Tensei)" Manifests a giant dragon and releases a shockwave.

Blood Erosion Release: "Super Recovery"

Official name unknown.

Kyoya's blood has the effect of multiplying an Oni's recovery power several times over. Even for those who have lost limbs, hands and feet can be regenerated with a large amount of blood transfusion. However, a disadvantage is that the body develops antibodies if too much blood is consumed, and the patient's body will not hold out if more blood is given; thus, if multiple limbs are lost, one must choose whether to regenerate a hand or a foot. He can also heal himself by bathing in his own blood, a fact discovered during the Kyoto arc when his carotid artery was cut by Tsubakiri and he accidentally drank his own blood. Incidentally, during his Rasetsu Academy days, it took 7 minutes to heal a leg injury.