Shaman - King

Manta rubbed his eyes and screamed. Floating in the air around the boy were dozens of translucent, glowing figures—samurai, monks, and ancient travelers, all smiling warmly.

It was the —the physical manifestation of a shaman's willpower and furyoku. Shaman King

"Let's show him what we can do when we work together." Yoh held out his hand. In a flash of blinding spiritual energy, Amidamaru did not just fight alongside Yoh—he merged into Yoh’s antique sword. The blade grew to massive proportions, glowing with an intense, burning white light. Manta rubbed his eyes and screamed