Fate/SLASHER

In the town of Crystal Lake, an ancient war is about to take place again.

Trevor Lind, a lonesome teen, is struggling with the harshness of high school cruelty and the dark thoughts that plague his mind day and night. Thoughts of harming others, as well as himself...

These problems, however, are miniscule compared to what is coming.

The Unholy Grail War, a secret contest that occurs as a result of randomness every certain amount of years, is at the peak of its birth. The winner and last team standing, Master and Sevant, offered the chance to win anything their heart desires.

Secret societies within Crystal Lake and across the globe itself know it, and they have been waiting impatiently.

As ancient horrors and infamous killers are summoned to aid these participants in battle, Trevor is suddenly and unwillingly pulled into the fray, accompanied by a slasher of his own.

Caught in the midst of a brutal and terrifying onslaught, with promises that no one will exit unscathed, Trevor will have to survive the harsh rule of the Unhoyl Grail, hoping that his Servant isn't his own undoing in the end...