At that very moment, the glittering golden Holy Grail suddenly dimmed.
In an instant, it lost its sanctity, and a completely opposite aura of evil began to seep out.
Thick black-red sludge gradually emerged from the bottom of the Holy Grail.
That sludge seemed like Sin Blood filled with malice.
As it overflowed the Holy Grail and ran down its sides, the entire Ryuudou Temple was engulfed by overwhelming malice.
"Legend..." Eri quietly grabbed Leon's wrist.
She took out the Courage Rod and looked at Leon, suggesting with her eyes that she should take action.
She had watched the story of "Fate" many times.
She knew that the Black Mud within the Lesser Holy Grail came from the Greater Holy Grail. It was All the World's Evil.
When the two Holy Grails connected,
the evil within the Greater Holy Grail found an outlet and began pouring into reality.
All the World's Evil was endless, and so was the Black Mud. In the end, it would swallow the entire world.
And at a time like this, naturally, it was time for the Full Moon Wave to make its appearance!
That's right, she, Eri, was a Full Moon Wave fanatic!
And even if the Full Moon Wave did not work, she still had Moon Goddess Purification.
"I told you to call me Leon. If you want to do it, go ahead." Leon patted Eri on the head.
Eri nodded and turned to walk toward the torii at the temple's mountain gate.
Illya, who had been worrying about her father Kiritsugu, noticed her. "Um... big sister, what are you going to do?"
"Illya." Eri paused slightly, and there was a gravity in her indifferent expression that Illya could not understand.
She softly asked, "Have you ever seen light?"
"Huh? Light?" Illya shook her