Shinji Matou at Your Service - Chapter 1012: FBI! Open Up!!

... excuse—serious events were indeed unfolding, and not just one.

First, a message came from Justeaze, who was monitoring the Greater Grail at Ryoudo Temple. After continuous analysis of the Grail's magical energy, the mechanics of this Holy Grail War were finally revealed.

The battle format remained a chaotic free-for-all, but the number of participating Servants wasn't the traditional seven or seven plus one. It wasn't even the emergency fourteen or fourteen plus one. Instead, it ...