Disclaimer: I do not own any characters appearing on this fic/story.

Hello guys, Caelus here again. This is not a chapter but a character sheet of Tatsuya. So far this is all that I can think of. It would be a great help to hear your thoughts and suggestions especially for his harem. I didn't put any of his parameters because I'm not that good in assigning such ranking. The first chapter will be published on Sunday GMT+8:00 time.

CHARACTER PROFILE

NAME: Tatsuya Yotsuba Kishinami (Kishinami Tatsuya)
KANJI:
岸波・達也
NICKNAME: Tatsu
AGE: 18
HAIR COLOR: Black
EYE COLOR: Dark Brown, Blue with rainbow shimmers (when using Mystic Eyes)
SEX: Male
NATIONALITY: Japanese
RACE: Human-Heroic Spirit Hybrid (Demi-Servant)
BLOODLINE: Yotsuba, Kishinami
SORCERY TRAIT: Gods Holder, Mystic Eyes
APPEARANCE: Tatsuya Shiba
BACKGROUND: Eldest son of Maya Yotsuba (The Irregular in Magic High School) and Hakuno Kishinami (Fate/Extra) and heir to the Yotsuba Household. He was a product of artificial insemination. As Maya's son, Tatsuya is the apparent heir to the Yotsuba Household but after the birth of his sister Miyuki and the discovery of his lack of ability to wield "magic" as it was intended, he was removed from the succession and he was reduced to being Miyuki's Guardian. Despite the facts of his parentage, he isn't accepted as a legitimate member of the family by many due to the fact that he cannot wield "magic" freely; the two types of "magic" he can freely wield are not considered "magic" by the family's standards due to their nature of only "destroying" and "restoring" information, not "altering" them.

Tatsuya's Magic Calculation Area is dominated by his powerful innate abilities, such as Decomposition, Regrowth and Elemental Sight. It is due to this imbalance that he is unable to use any other form of magic. So to enable him to be able to use other magic spells, especially the Systematic-Type Magic, his mother Maya Yotsuba and her older-twin sister Miya Yotsuba performed the Artificial Magician Experiment on the 6-year-old Tatsuya. Miya planned to use her unique and forbidden Outer-Systematic Magic Mental Design Interference, forcibly altering the area in the consciousness that is responsible for strong emotions (called the Limbic System) and installed a Magic Calculation Model in an attempt to create an Artificial Magic Calculation Area. But before the experiment could ever began, it was called off by Genzou Yotsuba and his younger brother Eisaku Yotsuba at the last minute stating that Tatsuya's "sperm donor" vehemently disapproves the operation.

With the experiment being cancelled and no alternative to expand Tatsu's abilities, the clan head decided to exiled Tatsuya from the Yotsuba Household, much to Maya's protests. In truth however, Genzou, his brother Eisaku and other 30 members of the clan who was involved during the "Nightmare of 2062" sent Tatsuya to his father's care.

ABILITIES: Spending almost 12 years under his father and stepmothers' care, Tatsuya honed his innate abilities and physical prowess. To begin with, Tatsuya was born as an Esper/Psychic from the start. His Decomposition and Regrowth abilities were mistaken by the practitioners and followers of Eidos Thaumaturgical Theory as his innate "magic" when in truth said abilities were purely his Psychic Powers. Though born as a Psychic, his Decomposition and Regrowth abilities allowed him to use simple Dissolution and Restoration/Healing spells since his Elemental Affinity are fixated on this two particular unique elements. Gram Dispersion, Mist Dispersion, and Material Burst are examples of his Dissolution spells by combining a basic Dissolution spell and both of his Decomposition ability and Decomposition Element. This make Tatsuya a person who sit in between the borderline of Magecraft and ESP; a literal Magus/Esper hybrid.

His Elemental Sight, the Mystic Eyes of Spirit, allows Tatsuya to connect to the Information Dimension and identify the landscape down to every detail. Every person and object imprints their Eidos within the Information Dimension, and every system and type of magic projects Sequences onto the Eidos through it. Because of this, nothing can escape from Tatsuya's Elemental Sight. Moreover, he can identify and examine each and every Eidos and Sequence and target them separately, irrespective of distance. It can be used to analyze any physical device or material at least down to the atomic level. Contrary to what most users of "Modern Magic" believe, Elemental Sight is not a Sensory-type "magic" but a combination of Pure Eyes and Mystic Eyes; making it a hybrid Mystic Eyes on par with Mystic Eyes of Death Perception and is designated as Rainbow under the Noble Colors System.

Starburst and Starbreak is his unique magecraft, basing it from his Sensei's Starmine and Starbow and adding his Decomposition ability to the mix. Unlike its predecessor who creates an explosion and releases heat upon impact, Tatsuya's version turn its targets into specks of dust upon contact without releasing any heat. Tatsuya is also proficient in Runes, having taught by a "certain Runic Master" although he can only use simple to moderate Runes. Aside from this, Tatsuya can also recreate and use certain Noble Phantasms using his Sorcery Trait Gods Holder.