She can't handle light

 

Name: Ouka Ootori Amatsu, Kotonoha Ouka (true name, before Catastrophe), "Professor Ouka", "God of Wisdom"
Origin: Silverio Ragnarok
Gender: Female
Classification: Ancestor, Chief of St.Canterbury Astral Research Institute, Cardinal of Holy See Ceremonial Office, Chief of Yamato's Astral Resarch Facility (former), researcher 
Age: 1000+ years old
Powers and Abilities: Superhuman characteristics, enhanced senses, immortality (types 1, 3 and 4), regeneration (low-godly), non-corporeal (destroying her body in 3rd dimension does nothing), axion creation, high-dimensional interference (axion acts as a medium towards high-dimensional energy and draws it without waste upon phase transition), can change others into Apostles, experience and intuition on the verge of precognition, can permeate her body with axion to increase her physical abilities, pseudo-teleportation, master martial artist
Weaknesses: Cutting her connection with higher dimension will remove her infinite regeneration and stamina/energy supply, she values knowledge even beyond her own life
Destructive Capacity: Island level+ (Glen with Sphere Braver aside, in pure output she's the most powerful Ancestor even if she doesn't focus on pure firepower, was increasing her power faster than Jace could awaken)
Range: Human melee range, dozens of meters with some of her abilities
Speed: Massively hypersonic+ to relativistic (could attack thousands of times per second and she was still growing growing stronger and faster)  
Durability: Island level+, however, without way to negate her immortality and non-corporeal nature she can't be killed at all
Lifting Strength: At least class 5+
Striking Strength: At least class GJ+
Stamina: Infinite
Standard Equipment: None
Intelligence: Scientific genius, in the Old Age she was leading team of the finest brains whose purpose was to deal with global energy depletion, eventually they succeeded by creating Interdimensional Phase Transition-Type Nuclear Fusion Reactor, after Catastrophe she was the one who came up with plan to create Yggdrasil and use Esperanto as IC chips, she can instantly analyze structure of matter to find weak point and reprogram Jace's anti-particle bomb in just a few seconds so that it would harm only him
Notable Attacks/Techniques:

 

 

- Translate Kannagi-volva: Ouka's Asterism, astral crystalization ability, reinforcement type. Starlight which assimilates purfied axion into her flesh and blood on a cellular level and pours infinite energy inside her. As a result, she has transcended limits of the physical body and turned into semi-energy being, autonomous starlight with preserved human form. Just in terms of pure output she almost stepped into territory of Sphere, it's undoubtedly the strongest ability in terms of strength and reaction time enhancement. Since this's Asterism purely of physical strengthening, in this form Ouka fights mainly with her arms and legs, literally tearing armored cyborgs and tanks with her bare hands. Densely converged energy in her limbs can cut through heat rays and explosions. Prominence comparable to stellar corona discharging from surface of her body can turn flesh and steel turn into charcoal with just one hit and she can attack thousands of times per second. High-energy circulating through her body is amplifying her already rapid regeneration as an Ancestor and she can recover from complete destruction of her body near-instantaneously. However, the main feature of her Asterism is to overload her body in the form of giant explosion. Her phenomenal attachment value is actually safety valve to keep her body from spontaneously exploding, lowering it just a bit will result in powerful explosion akin to miniature supernova. Combination of this self-destruction and infinite regeneration allows her to detonate without end, earning her title of eternal human bomb. Countless pieces of flesh and blood rain down on her enemies and burn like napalm. She can also tear parts of her body and use them as a powerful grenades. Furthermore, she can calculate size of her ruptured flesh, as well as distance and position of its fall to regenerate her body there and perform quasi-teleportation. Her power output and heat of body is steadily increasing, allowing her to generate blinding light similiar to flash bang with just her finger snap and forcefield inside her body so abnormal it could no longer exist in 3-dimensional space. No Ancestor can deny that among them, in terms of pure combat ability and output Ouka reigns supreme.

 

- Ancestor: beings that can be described as the next evolution of humanity, but also as shadows of their former selves. Originally they should become part of the Amaterasu, but instead remained on the Earth. Perhaps because they were closer to the hypocenter of Catastrophe they were reborn as immortal beings who are subspecies of Sphere and sibling stars of Amaterasu. Their true essence is independent and autonomous Sphere phenomenon with physical body. Since their soul and personal data (proof of existence, records of all information constituting them) doesn't exist in 3-dimensional space, but in the high-order dimension called The Other Side, it's pointless to destroy them physically. Whenever they're injured their appearance at the time of Catastrophe is replicated through personal data recorded in the higher dimension, regenerating all harm inflicted on them and granting perennial youth. Regeneration itself doesn’t even take one second, although they can consciously delay it to accommodate their fighting styles. Even if all particles in their body are erased, it still won't be enough to kill them. Furthermore, due to constant connection to Amaterasu they have unlimited stamina and energy supply, thus they can project Asterism at all times thanks to breaking point of maintainability, making them small-scale singularities.

  • Axion: another ability unique to Ancestors is creation of axion, crystalized astral particles. It's a matter of highly converged high-dimensional energy, as such it can be seen and physically touched. It has many uses: from turning others into Apostles, to acting as catalysts for high-dimensional energy similar to orichalcum and even creation of integrated circuits in the era of room temperature superconductivity. Ancestors don’t appear to have any limits in the amount of created axion, although large-scale creations such as Yggdrasil require long-term preparation.

    • Baptism: it’s a ritual through which Ancestors turn others into their Apostles. By creating purified axion and embedding it into chosen one, they can receive power comparable or even exceeding that of Planetes. Resulting body alteration grants them all benefits common to Esperanto, including increased physical abilities and acquisition of Asterism. The greatest feature of this ritual is that axion grants Apostles characteristics of their masters, in this case, immortality. So long their connection with Ancestors remains they can’t die at all, receiving infinite regeneration and energy supply, but not lifespan. Ancestors are always aware of the Apostles they’re connected to and at any time they can take away their power. It’s possible to become Apostle of two different Ancestors through dual baptism. However, because in this situation Apostle has two power sources that inevitably collide with each other, oversupply of energy causes Apostle to repeatedly collapse and regenerate, turning them into rabid berserkers. Apostles of Ouka are Syu Keyaki Amatsu and Rina Kirigakure.

  • Millenium Spirit: arguably, the greatest quality of Ancestors is their immovable mental structure. Unlike humans who must face their limits already at the beginning of life due to limited lifespan and choose path they’re going to strive for, Ancestors have no such limitation thanks to their infinite life. Having lifespan and experience of 1000 years allowed them to adapt to various battle situations, predict behavior of others by calculating possibilities and simulating different scenarios, provide accurate prophecies by analyzing information about others and environment they inhabit and pinpoint position of the target hundreds of meters away through mere intuition among other feats. Eternal youth grants them every opportunity to experience all sort of victories without underestimating adversaries and misfortunes to learn from in order to grow and win in the future. Ancestors don’t overwhelm their opponents with crushing force such as Slaves of Light, they make sure that others are unable to fight against them in the first place.

 

Notable OBD Victories:

Notable OBD Losses:

Other: