Fate/Yggdrasil

Fate/Yggdrasil is a blognovel written by YKIR in July 2019. The work is divided into two parts: The work is to be considered, in the author's words, not canonical both from the narrative point of view and from the point of view of the rules imposed by Fate/stay night. In fact, many rules have been revised and this makes the work completely separate from the rest of the franchise. However, it should be noted that although the author has claimed the non-canonicality of Fate/Yggdrasil, however, in it there are rather obvious references to the events of Fate/stay night. The reason for this is not clarified.
 * First Arc (which goes from Chapter 1 to 78)
 * Second Arc (which goes from Chapter 79 onwards)

The revisionism of Fate / Yggdrasil
As already mentioned, many Fate/stay night rules have been altered either partially or completely, another example of this is the number of organizations and therefore of magi in the world. As you know, according to Fate's canonical lore, since Thaumaturgy collects a predetermined amount of power from the Root, the more magi there are, the weaker their individual power is. This rule appears to have been completely ignored.

The organizations, as already said, have increased and therefore there is no longer only the Mage's Association and in addition the Holy Church seems to have been completely removed. The rules of Thaumaturgy may have been completely changed, but not much is known about it, however the whole system is likely to have been revised.

Quality and structure
Chapters are not published in a particular schedule. The author always leaves links on his Twitter profile. The chapters vary in size and the writing style is quite simple to read. The whole work is not to be considered a light novel since it doesn't follow the typical structure of the genre. From the author's words it's clear that Fate/Yggdrasil cannot even be considered a fanfiction. The structure of the work is much more reminiscent of a novel.

In the Second Arc, drawings by a Deviantart artist named BikoWolf1 were also added.

The Holy Grail War of Yggdrasil
Reading the work it can be seen that the First Arc follows the system of the Seven Servants, while the Second Arc adopts a new one with the Nine Servants. The whole war is fought to obtain a Holy Grail that owes its miraculous powers from the sacrifice of Odin, whose blood filled the chalice that was at the feet of Yggdrasil. The author deliberately followed the story of Hávamál.

However this Holy Grail is not a sacred object, it does no miracles, on the contrary, it evokes Nidhoggr which, apparently, is trapped in the Grail. In the First Arc, when Yukiko Kumahira manages to obtain the Holy Grail, she frees Nidhoggr which brings the end of the world. The Second Arc appears to be a new universe born from that destroyed in the First Arc. But still very little is known about it.