After the failure of Firth's first light ball experiment, Firth was not discouraged, and he began to think about the reasons for the failure.

"It seems that it is not enough to gather energy, but also to be able to maintain the balance of energy inside the light ball!" Recalling the imbalance of internal energy when the energy ball was gathered just now, the form of the light ball could not be maintained, Firth thought calmly.

"But how can we maintain the balance of energy inside the light sphere?" Firth was in a bind.

Firth lowered his head and looked at the ground in contemplation, the balloon he had let go roll down to his feet in the breeze.

Looking at the balloon at his feet, Firth picked it up and suddenly thought of something: "I remember seeing a puppy standing on top of a ball and standing on it with a balance. ”

Firth remembered an old time.

"Grandpa Smith, why are there so many people there?" The young Foss took Smith's hand and looked at the crowd of onlookers in front of the street and asked curiously.

"I don't know, let's go over and see." Smith took Firth's hand and walked towards the crowd of onlookers.

Squeezing into the crowd, Smith and Firth stood in the front row, only to see a black and white Ultra puppy stepping on a leather ball in front of them, constantly moving his feet, magically standing on top of the ball without slipping, and next to the puppy stood an Ultra civilian, who gave instructions to the puppy to perform.

"Good!" The onlookers saw this magical scene and applauded in unison.

"Grandpa Smith, that puppy is amazing!" Firth felt very miraculous.

"Silly boy, it's nothing, the reason why the puppy won't slip off the ball is because it has been moving the position of the ball, you look at its feet, every time it moves the ball, it will roll, and the squeezing area at the top of the ball will continue to change, in this way you can keep the balance of the force in all positions of the ball, and naturally it can't fall, but the dog's footsteps must be consistent with the distance the ball moves." Smith touched Firth's head and explained gently.

"Grandpa Smith, why can't I understand what you're saying?" Young Firth looked up at Smith in surprise.

"Yes, you'll understand when you grow up."

......

Thinking back to what Smith said now, Firth suddenly realized: "Maybe this method can be used to maintain the energy balance inside the light ball!" ”

Firth began the second lightball test.

Taking a deep breath, Firth stretched his hands to his chest again, his hands were parallel to the ground, his left arm was placed under his right arm, his two palms were parallel to each other, and he began to gather energy, and when the energy gathered to a certain extent, a red ball of light appeared between the palms of his hands.

Firth stared closely at the brewing ball of light in his hand, and he could clearly see that the energy inside the ball of light was constantly fluctuating, like a spiral, and it could break the form of the ball of light at any time.

Firth gathered the energy as he felt the energy scurrying inside the ball of light.

This time, he only used his left hand to gather energy, and by feeling the energy inside the ball of light, Firth constantly adjusted the position of his right hand and flexed the ball of light, like a puppy that kept moving his body, maintaining the balance of the energy flowing in all directions inside the ball of light, so as to maintain the balance of the force of the ball of light, so as to achieve a stable state.

Through this method, Firth finally stabilized the shape of the ball of light, after the energy was gathered, Firth removed his left hand, his right hand firmly grasped the ball of light, threw out his right hand, and threw the ball of light out with all his strength, the ball of light detached from the palm of his hand, and shot at high speed into a steep mountain composed of towering rocks in front of him, and the ball of light shot into the mountainside halfway up the mountain.

Two seconds have passed.

"Boom!" An earth-shattering roar resounded through the sky, and the mountain peaks cracked from within, and smoke rose everywhere, followed by a spectacular fireball, and the entire mountain was reduced to powder in an instant.

"Good!" Looking at the spectacular scene of the mountain peaks exploding in front of him, Firth smiled with satisfaction, "It seems that the power of this ball of light explosion is stronger than the Fospava ray!" ”

"I've finally developed my first light skill on my own!" Firth muttered happily, "But what should I name it?" ”

Firth remembered the spiral energy that was surging when he maintained the form of the light ball just now, and said in a flash of inspiration: "Let's call it the spiral light flow!" ”

......

"Ready? Kotaro-kun, I'm going to enter your body. On the beach, Taylor, whose colored timer flashed red, asked.

"Well, I'm ready, let's go!" Kotaro was ready, nodded, and closed his eyes.

"Ultra Fit!" Tairo shouted, crossed his hands in front of his chest, and his body began to become transparent, and then he rushed into Kotaro's body, and Tairo's figure disappeared with it.

Kotaro opened his eyes, and Tairo's voice sounded in his ears: "Kotaro-kun! We're finally together again! ”

"Yes, the moment you entered my body, it was as if I had returned to the moment of the original battle." Kotaro said with a smile.

"Alright, Kotaro-kun, it's not too early, let's go home quickly!" Taylor whispered in his ear.

"Okay, Taylor is back." Kotaro walked towards downtown Tokyo.