DXD: Naruto Recreation System

The tension was palpable as the ORC stood trapped within the barrier, their powers rendered useless. Bullets rained down, blessed with holy energy, each shot tearing through the already destroyed room and striking with devastating precision.

Issei stood at the forefront, shielding Rias with his own body. Blood seeped from his wounds, but his determination never faltered.

"Issei, stop!" Rias cried, her voice filled with anguish as another bullet grazed his shoulder. Despite having the ability to kill him with one bullet, the human mages were not shooting at vital points.

"I'm not letting them hurt you," Issei gritted through clenched teeth, his body trembling from the strain.

A burst of light erupted as one of the mages fired a shot that struck Rias in the leg. She cried out, collapsing to the floor as the holy energy seared her flesh.

"Rias!"

Issei's heart thundered in his chest. His vision blurred with rage and despair.

"She's hurt because of me... because I wasn't strong enough," Issei thought.

In that moment, a voice echoed in his mind—a deep, ancient rumble that resonated with power.

"Are you ready to fight, boy? Truly fight?"

Issei's eyes widened. "Who—who are you?"

"I am the Red Dragon Emperor, Ddraig. And you, Issei Hyoudou, are my host."

The words shook Issei to his core. "But... I thought I was just..."

"A weakling? Perhaps. But your human heart—your love for these devils you call family—has allowed us to connect. Also, you are lucky because of your small reserve of devil energy that I can use dragon power despite the barrier. Will you take my strength, or will you watch them die?"

Issei clenched his fists, his resolve hardening. "I'll do whatever it takes to protect them!"

"Then unleash me by giving up one of your arms and let the world know the power of the Red Dragon Emperor." Issei was in a state where he couldn't think and only wanted to protect his love.

A surge of energy erupted from Issei, green light enveloping his body. The mages hesitated, their confidence wavering as they felt the shift in the air.

From Issei's left hand, the Boosted Gear manifested, its emerald jewel glowing brightly. The aftermath destroyed the house completely.

"What is that?" one of the mages muttered, fear creeping into his voice.

The jewel pulsed, and Ddraig's voice echoed, audible to everyone. "I am the Red Dragon Emperor, Ddraig! Rejoice, mortals, for you face the wielder of the Boosted Gear!"

[Boost] [boost] [boost]

Empowered by Ddraig's energy, Issei charged forward, his body moving with newfound speed and strength. He slammed into the nearest mage, sending them crashing into the wall.

But the humans were not done. One of the mages pulled out a weapon—a rifle loaded with glowing holy bullets.

"Fire!"

A volley of bullets rained down on Issei, each one aimed to kill. He raised his arm to shield himself, the holy energy burning through his flesh.

"Issei!" Rias, Koneko, Akeno, and Kiba screamed, their voices extremely worried.

Pain lanced through him, but Issei stood firm, his mind focused on one thing: protecting his friends.

"Your resolve is admirable, partner," Ddraig said. "But if you truly wish to save them, you must push further. Sacrifice is the path to power."

"I will ask you again: do you want to sacrifice your arm for the power? Because after this, there will be no turning back."

Without hesitation, Issei gritted his teeth and extended his arm. The Boosted Gear began to glow brighter, its shape shifting and expanding.

"Balance Breaker!"

Green energy erupted around him, forming into crimson armor that encased his body. The Balance Breaker Scale Mail radiated power, its presence shaking the room.

[Boost]

"Now," Ddraig's voice boomed, "show them the might of the Red Dragon Emperor!"

Issei roared, charging at the mages with unstoppable force. Bullets bounced off his armor as he tore through their ranks. The humans tried to retreat, but Issei's wrath was unrelenting.

One mage fired directly at Rias again, their holy bullet aimed for her heart. Enraged, Issei intercepted the shot, his armored hand catching the bullet mid-air.

"You hurt her," Issei growled, his voice dripping with fury. "Now you'll pay."

With a single, devastating strike, he crushed the rifle and sent the mage flying.

The barrier also shattered as the last mage with the Sacred Gear was destroyed by Issei's relentless assault. The ORC rushed to Rias, her leg still bleeding from the holy wound.

"It's okay," Rias whispered, her voice soft with a red blush. "Issei, you saved us."

But Issei didn't respond. His body trembled, the toll of the battle and the use of Balance Breaker pushing him to his limit.

As he collapsed to his knees, the red glow of his armor began to fade.

After that Issei was healed by Asia, who was crying the whole time as she felt that if she had been there, she could have healed everyone.

"You don't need to cry," Issei said, and Rias nodded.

"Yes, I am glad you were not there, Asia, because the church mages might have targeted you instead of me. After all, you are now a devil."