"As long as it's alive, I'll even kill gods."

Name: Ryougi Shiki
Origin: Kara no Kyokai
Gender: Female
Classification: Human(?), Avatar of Akasha
Age: 19-20 (in the first volume), 30s as of Mirai Fukuin
Powers and Abilities: Super speedstrength, agility and dexterity, has the Mystic Eyes of Death Perception (MEoDP), can interact with intangible objects, multiple personalities (3-5, depending on interpretation), feels no fear (she literally killed it), expert swordfighter, has a self-suggestion put on her that unlocks Ryougi's true fighting skills while wielding a sword, combat clairvoyance, resistance to mental attacks and possession, | Same but stronger with her being the avatar of a multiversal being, further advanced MEoDP, able to grant wishes, possible omniscience
Weaknesses: Her ability requires to trace the lines of death with a cutting move (be it in melee or a well-aimed throw). Her eyes can only see things with a "form" thus MEoDP is useless against concepts that are too vague. She's a glass cannon
Destructive Capacity: Wall level, but durability can usually be ignored via MEoDP (can kill both animate and inanimate things and even concepts) | Potentially universal (claimed she can effortlessly destroy reality, seemingly destroyed a parallel universe to render the absolute prediction made by Mifune's mother useless)
Range: Extended human melee range, 10+ meters by throwing her knife or using the ability of her prosthetic arm
Speed: Supersonic | Supersonic, hypersonic+ reactions via powerscaling (Word of God claimed that Shiki's 3rd personality can fight a defensive battle against Servants)
Durability: Superhuman+ (can survive punches that take down walls, albeit she was knocked out in the process)
Lifting Strength: Peak human
Striking Strength: Class K (her most powerful blow was compared to a cannonball)
Stamina: High, can fight for extended periods without any signs of fatigue (she can also ignore pain in combat)
Standard Equipment: Knife, Magical prosthetic arm (with a hidden knife), Ryougi family katana
Intelligence: Above average. Skilled combatant | Nigh-omniscient due to her connection to Akasha
Notable Attacks/Techniques:

- Magical Prosthetic Arm: Shiki hides a second Knife here in case of emergency, the arm itself can grab things from a distance and also affect intangible objects.

- Mystic Eyes of Death perception: Ryougi can "perceive death" in the form of lines. By tracing those lines with a sharp object, she can "break" the object along that line and the damage inflicted this way can not be healed in any way. With more focus Ryougi can even kill both animate and inanimate objects by finding the line of their origin and "killing" it. But her ability isn't limited to objects and living beings. She killed spirits and destroyed spells as well as defeating abstract things like telekinesis. Unlike the other Shiki, Ryougi can naturally use MEoDP without any strain. Her ability to "kill" origin is also superior to "killing existence" and likely isn't subject to Tohno's limitations regarding MEoDP.

- Ryougi Shiki (Void): The hidden (debatably) third personality of Ryougi Shiki. In fact, it is this personality that is directly connected to the root of all things. She can also kill a concept such as the distance between her and an enemy, universal bending, sickness, mental weakness, time, etc. Beyond that, she can kill multiple things within a single motion. She also claims that it would be trivially easy for her to annihilate reality and can grant any kind of wish.

Notable OBD Victories:

Canaan (Canaan)
Nanaya Shiki (Tsukihime) - Nanaya Profile
Wolverine (Marvel comics) - Wolverine Profile

Notable OBD Losses:

Berserker (Fate/Stay Night) - Berserker Profile
The Incredible Hulk (Marvel Comics) - Hulk Profile

Inconclusive Matches:

The Saint of Killers (Vertigo comics) - Saint of Killers Profile
Kumagawa Misogi (Medaka Box) - Kumagawa Profile

Other: Not to be confused with the protagonist of Tsukihime or the similarly - named character from One Piece

Key: Base Form | Void Shiki