The world is not what it seems. Humanity strives forward in the twenty-first century, oblivious to the truth behind the curtain. Magic and mysteries are real, for among the humans are the magi and their Mage's Association, their Holy Church, their Atlas Foundation and their secret pacts. Beasts of incredible power roam in the shadows: vampires, demons, spiritual entities and youkai. Chief among them the Dead Apostle Ancestors and the True Ancestor. The world itself, Gaia, is conscious, and even the other planets have powerful beings called TYPES looming overhead. Meanwhile the heroes of the past linger on as powerful spirits that can be summoned by magi, like King Arthur and Alexander the Great. Despite the turmoil and chaos, humanity knows none of these secrets. Most are at best food for the beasts, or bystanders for the magi.
There exists in this world magic and miracles both. Where magic is commonly known as magecraft or thaumaturgy, miracles are known as True Magic. There was a time, the Age of the Gods, when magecraft was close to True Magic, but since then, only five True Magics remain, and of those, one is officially dead, another lingers on without an user, another is inaccessible, and another yet is practiced by an old, crippled man who is as capricious as he is absent. The Fifth True Magic is in the hands of a seemingly irresponsible teenager whose propensity for destructive displays deeply worries the magi.
It's in such a world that heroes rise to defy the odds and keep the shadows at bay. In Misaki City, Tohno Shiki and Arcueid Brunestud bravely fought off the Dead Apostle Ancestor, Nrvnqsr Chaos, and later, with the help of Sion Eltnam, Night of Wallachia as well. And when Aozaki Aoko boredly decided to bring the TATARI back as a familiar, she too was unmasked and wandered off.
Truly this is a world where anything could be possible, and where the shadows are as varied as the heroes who oppose them.
The theme primarily includes elements from Mahou Tsukai, Tsukihime, Melty Blood and Kara no Kyoukai. While elements from Fate/X are present in the background, they are not hard-defined and, in the case of entities that would seriously deform the PL scale due to the scaling difference between Tsukihime and Fate/X (like Gilgamesh), may not be appable at all. Characters that should normally be dead can be apped anyway, provided a good reason is given. (i.e. Nrvnqsr having survived, or whatever.)
This is subject to change, and DEFINITELY not canon, but it's easier this way:
CURRENT YEAR: Same as OOC. Yes that means the series ICly happen about +10~ years than canonly stated.
1982 - Touko Aozaki born.
1983 - Aoko Aozaki born.
2000 - Mahou Tsukai no Yoru, Fifth Magic awakened
2001 - Fourth Grail War (Fate/Zero)
2002 - Aoko meets Shiki (Tsukihime prologue)
2005 - Mikiya first meets Ryougi (Kara no Kyoukai prologue)
2009 - Kara no Kyoukai
2010 - Tsukihime, Kara no Kyoukai
2011 - Fifth Grail War (Fate/Stay Night, unknown route)
2012 - Melty Blood (up to the creation of White Len; Dust of Osiris not appeared yet)
2014 - Current Year