"Kai, watch out!"

The moment Ria's voice resounded in his head, he quickly raised his left hand, creating his Oscillation Shield to block an incoming attack from the left. However, he realized that the push was hard to the point it launched him to the wall almost instantly.

By the time he realized that his Oscillation Shield, Ria already created a powerful shield that appeared from underground, redirecting the water to somewhere else.

Kai was astounded after he saw that Ra finally appeared on Eric's side again. He had known that his Sound Insulation Room to be a double-edged sword. Eric couldn't hear Ra while Kai couldn't hear as well. This was precisely the reason why Kai built a slightly wider room in this small underground area.

The time from when the attack broke his magic to reach him was enough for him to react and either block or dodge it. However, it seemed that Ra was still better than his expectation since he could attack him while being rammed by Ria. Even he couldn't withstand Ria's continuous attack while protecting someone. Yet, the seahorse actually could, showing what it meant to be an SSS rank magical beast or a Protector.

Kai took a deep breath, calming his heart down and trying to come up with a plan. Ra would probably use the same technique earlier to protect himself and Eric, so attacking him blindly was a bit hard. On the other hand, if they didn't attack in this precious chance, these two would be able to restart the battle again.

By the time he came up with a plan, Ria already executed one. The white lines suddenly changed position as if she removed the first one and created this one. There were two focuses on this ring. One was for her, and the other was targeting Ra and Eric.

She slashed her sword two times, sending shock waves from two opposite directions.

"Tch. I still fall short by a few seconds." Kai clicked his tongue, noticing yet another point that he couldn't match her. He pulled the last spear on his back and threw it toward Eric's head.

Ra raised both hands, stopping the two shock waves with his bare hands while knocking the spear away with his tail.

"See… Just like you have noticed his weakness, I can also notice your weakness." Ria smirked, looking at Ra while ready to swing her sword once more.

Ra furrowed his eyebrows, noticing how she positioned the line. It wasn't only to attack him, but she was also planning to attack Eric even if he threw Eric again to the wall.

Kai also realized what Ra's weakness was and murmured to himself. "I see. It's the area of contact. Before, we slashed him from the side, so we have a huge area of contact, allowing him to blast our swords away. If we actually slashed him vertically, the contact area is only that thin sharp edge, so we won't feel too much force. That's why he actually used his bare hands to stop it instead of the water wall again."

"I'm not the same as me from ten years ago. With my strength now, that frog wouldn't be able to kill any of my friends before it dies in my hand!" Ria smirked.

However, Kai somehow felt this smirk wasn't directed to Ra. Instead, it was telling him something.

Kai only realized it five seconds later, and he quickly retracted one of his swords while creating a magic circle on that hand as if carrying a shield. He looked like a knight with sword and shield at this time, ready to attack them at any time.

"It seems the one you choose to cooperate with is so useless." Ria laughed, looking at Eric, who was still lying on the ground. The kick on the back of his head almost took his consciousness away. Even saying those words to Kai earlier took all of his energy before his consciousness became fuzzy.

"Don't be too proud, human. We are fighting on the land. If you are fighting me in the sea, you won't stand a chance." Ra could only grit his teeth. As Ria already said, his prowess didn't really have too much different than S rank magical beast, especially on the land. The only way to do it was to have Eric stop Kai while he was fighting Ria. Sadly, Eric seemed to be a burden instead.

He thought about running away, but this teacher and student duo would surely not let him. At the same time, no magical beasts would come to this place because of those soldiers. Ra was on his wits' end since Eric still needed one or two minutes to grab his consciousness back.

At the same time, he couldn't see any path to victory. 'Should I sacrifice this useless bear?'

A dangerous glint came out of Ria's eyes as she released her aura, swinging her swords twice. The shock waves attacked didn't come in the same direction from before, but still in the opposite direction.

Ra quickly destroyed the two shock waves and glanced at Kai. Surprisingly, Kai didn't move this time. No, the correct way to describe him was that he moved forward slightly but stopped as if he realized Ra would destroy it instantly.

"Why don't you attack me again, idiotic seahorse? Do you think you are great? You are the invader this time, and you are complaining that you don't have good terrain? As expected, an idiotic seahorse." Ria kept taunting him.

Ra gritted his teeth and still didn't move, waiting for Eric to get up again. Unfortunately, the chance he was waiting for turned out to be useless the moment he heard a groan from Eric.

"Argh!" Eric screamed in pain while closing his eyes with his hands as if something was wrong with them.

At this time, he noticed something was off. Ria didn't make any suspicious movement other than taunting and attacking him. However, Kai didn't do anything this whole time other than throwing the spear and changed his position.

*Thud!*

Ra looked at Kai, specifically his green magic circle. He suddenly thought, 'Is he this passive? No!'

He got his answer almost instantly as he quickly noticed that the magic circle was pointing at Eric instead of forward like using a shield.

A water bubble appeared beneath his feet and created a water wall to block Kai's area. He suddenly realized that Eric's symptoms lessened and knew it was truly Kai's attack.

"Tch, time to go to the second phase then." Kai clicked his tongue and muttered to himself. He ran around the room, going to continuously attack Eric while his consciousness was still fuzzy.

The water wall was blocking, absorbing, and directing a portion of his sound attack, so the effect wasn't that much of a big deal. Without saying anything, Ria and Kai knew that they needed to kill Eric before he recovered. Both of them only nodded once to form a mysterious plan. Though the plan between them was only to support each other's plan and improvised.

Following Kai's movement, Ra quickly raised the water barrier to protect Eric from this sound attack while looking out for Ria's sword attack.

However, Ria didn't attack him for thirty seconds while Kai kept moving around until Ria felt it was the time and swung her sword. Kai abruptly stopped his movement as if he was scared that the attack would come and sliced him.

At this time, Ra didn't mind since he was able to concentrate on these two sword attacks.

Ra destroyed these two sword attacks as soon as possible but didn't realize a third attack that came from behind the water wall.

It somehow became his blind spot, and only after the third shock wave cut through his water wall that he somehow realized it before destroying it with his fist.

"Argh!" The scream made him realize that Eric was still lying on the ground. The shock wave had cut his other hand.

This one moment confusion created a chance for Kai, who had stealthily come right behind the water. Kai slashed his swords at the same time from above to make sure the point of contact was smaller. It penetrated the water wall. Kai felt the force that was trying to blow his sword upward, but still manageable.

"Ha!" Kai let out a roar as he tried to cut both Ra's hands, albeit the force from the water slowed his advance.

After slightly slicing a Ra's shoulders, he somehow managed to react and ducked down.

Unfortunately for him, this duo was a little bit abnormal. The moment Kai made his appearance, Ria already had another two sword strikes that came from his left and right.

Ra blocked it again with his two hands, but there was suddenly one strike that was sent slightly later than the two.

"Gah!" Ra spat blood. Even though it looked like one strike, it was a few strikes that came one after another, slowly piercing through his skin.

If one wasn't enough to make a single wound, Ria simply thought about attacking a few times, and the result was in front of her eyes.

But the attack wasn't over yet. Due to the lack of concentration, there was a slight gap in his water wall, allowing Kai to slash his swords with all of his strength.

"Kh!" Enduring the pain on his back, he leaped a little bit backward as he knew there was nothing he could do other than avoiding this attack. He shot out water to blast Kai away, so he didn't kill Eric.

Ria finally used this chance to send four attacks to Ra. The first three came from left, right, and behind him and were handled by his two hands and tail. Surprisingly, the last one ran through the ceiling and came from the front. It was at this time he realized what was going on and shouted, "Sh*t!"