Previously, before Avicebron summoned his Noble Phantasm, there was a fierce fight between two heroes on the corner of the battlefield.
The battle was so fierce that no one could even step in since the battle in this place was on a different scale compared to the battle which was happening on this battlefield.
*BOOOM!*
An explosion happened and a loud "boom" sounded, causing a strong whirlwind to form on the ground, showing how intense their battle was.
Two heroes, one was holding a katana, and the other hero was holding a spear, rushed toward the whirlwind with very fast speed, breaking through the sound barrier, and clashed with each other again.
*BOOOOM!*
During this clash, thunder and flames were flashing and we tried to tear each other apart.
The two figures had transformed into thunder and flames, colliding with each other, several times in an instant, causing more destruction on the corner of the battlefield.
*Clang!*
Under the clash between thunder and flame, katana and spear collided with each other, creating a loud metal clashing sound, creating a tornado, and shattering the earth beneath into pieces.
*Crackle* *Crackle!* *Crackle!*
With the crackling sound in the air, the sword turned into a silver light, slashing downward with very fast speed, then a thunder from the sky also shot down along with the movement of the sword.
*BOOOOOOOM!*
In exchange, the spear rotated at a very fast speed, creating a strong wind, intensifying the temperature flame and covering the surrounding areas, scorching the earth, and vaporizing any liquids in the area, leaving them with nothing.
In the next moment, there were countless collisions between katana and spear again, which aroused a clear crackling sound, creating a burst of wind, coupled with the bursting arc and exploding sparks.
Both of them didn't have an intention to defend and in their only minds were to attack their opponent with an intention to kill each other.
Wherever they went, the air evaporated.
Every time a collision between katana and spear happened, the ground would shatter and there would be a huge explosion with their clash.
Such a confrontation was happening only in a short time, even though the words which were used to describe the fight between Karna and Raikou were very long.
The fight between the two of them was like a conflict between thunder and fire which happened in the myth.
After an intense collision, Raikou and Karna were both shaken back under the storm-like shockwave, and their bodies continued to move backward.
*Crackle!* *Crackler!* *Crackle!*
From Raikou's body, thunder emerged and it turned into an arrow, formed on the bowstring, and it was released toward Karna.
*Swoosh!* *Swoosh!* *Swoosh!*
Raikou's arrow pierced the air, following the direction of Karna, who was constantly moving backward by the force of the shockwave, then hit him without mercy!
*BOOOOOOOOOM!*
Suddenly, a raging flame burnt down everything.
The flame was so bright, similar to the sun itself.
When the arrows of thunder hit the flame, it was gradually burnt out and soon, Karna appeared from the flames, holding a sharp spear.
His expression was very calm, and to this response, Raikou didn't feel surprised.
"It seems that I need to use more power."
If Raikou wanted to end Karna, there was no way that it could be done with only a few arrows of thunder and she knew that she needed to use her Noble Phantasm to end Karna's life.
On the contrary, there was a little nostalgia in Karna's eyes that made Raikou feel slightly surprised.
Karna looked at Raikou and said softly, "It's a nostalgic way of fighting. It's similar to that man."
Upon hearing this, Raikou fell silent and of course, she knew who Karna was referring to.
Like Atalanta and Semiramis, Karna was abandoned by his mother after he was born.
Karna's mother is just an ordinary human, but because she has a unique body which causes her to unable to have children normally.
But then, she learned about her unique body which was capable of conceiving the children of God.
Karna was born because his mother tried to decide whether what she learned was the truth or not, and as a result, she had given birth to the child from the God of Sun, Surya.
After that, Karna's mother was afraid that it wouldn't be good when she was known to give birth to a child when she was unmarried, so she decided to abandon Karna.
Although to protect Karna's safety, she asked the God of Sun, Surya to give him armor, but in the end, she abandoned him.
Later, Karna's mother married Pandu and gave birth to five children. Among them was Kunti's third child, Indra's spiritual son, Arjuna.
"He and I are half-brothers."
With a calm expression, Karna told his own story.
"However, because of our different positions, we have taken a path where we can't compromise with each other."
Arjuna was the son of King Pandu and Kunti, who was also a prince, and Karna, who was raised by a charioteer since a child, became the adopted son of a person from a country that hostile toward Arjuna's country.
Later, Karna and Arjuna became enemies of each other in the war, and that fight couldn't be avoided.
Of course, Raikou knew Karna's story and she also knew that the end of the story also wasn't good since Karna had a bad ending in the story.
In the war, Karna encountered many problems and enemies, then had a final duel with Arjuna.
During the duel, the curse of Brahma prevented him from using his full power and Indra's trick had caused him to lose his important armor.
Even Karna's mother also came to him, hoping for him to stop his fight with Arjuna.
However, even with all of that, Karna didn't stop and fought against Arjuna, but he lost and killed in the duel.
"You look a lot like that man."
Karna stared at Raikou and said, "As the incarnation of Indra, the power of thunder exists within your body. Even your way of fighting is similar. You're like a clone of that man."
Arjuna's weapon was a bow and he was also a thunder user.
Therefore...
"For this reason, when I saw you for the first time, I confirmed that you are my enemy in this Holy Grail War."
Karna cast his gaze on Raikou with a calm expression saying those words.
"For you, I, who also possesses part of Indra's power, are an enemy that you have to defeat, right?
"Karna!"
When that name came out from Raikou's mouth, she raised her hand and a violent thunder suddenly struck down her body.
*BOOOOOOOM!*
Karna's eyes became serious.
*Bang!*
Under such a loud sound, Raikou suddenly rushed toward Karna at a terrifying speed.
In her eyes, what was showing wasn't the gentleness of mother, not the coldness of a samurai, but rather, an Oni.
"Die!"
Shouting that word, Raikou's katana was surrounded by thousands of thunderbolts and slashed it down in the direction of Karna.
*BOOOOOOM!*
At the corner of the battlefield, a burst of thunder blew up and swept everything around.
The ground was shattered, the trees were burnt, the rock was crushed, the sand was scattered, because of the raging thunder which was blown up by Raikou.
Then blue thunder exploded, blinding the entire area!
*BOOOOOOOOOOOOOOM!*