It's Hero Time! Vol 1 ( Ben 10 x Massive Harem)

Chapter 28-Prelude to Ultimate Heroes

Harribel crossed her arms as Ben was engulfed by the green light, but she maintained a neutral expression. Lilynette was eager to see how the fight would go, while Harribel's Fraccion were filled with determination to prove themselves to Lady Harribel and Lord Aizen, but they were also tense about facing someone who could fight on par with the Espada.

The light faded, revealing Four Arms, with all four of his arms, flashing everyone a smirk. Though she still appeared impassive, Harribel was intrigued. If her guess was right, this was one of the aliens that Tennyson used against Grinko. She wondered how well her girls would fare against such an opponent.

"No serious injuries, if possible," Harribel spoke up. Though it was debatable whether she was speaking for the sake of Ben or her Fraccion.

"Understood, Lady Harribel," Apacci said to her leader, before addressing her teammates. "Alright, let's show this human what we can do!"

"Who do you think you're giving orders to, Apacci?" Mila Rose asked dryly, though she prepared herself all the same.

"You're being pretty full of yourself," Sung-Sun added, though she brandished her weapon for battle.

Four Arms clenched his fists tightly. This was it.

Apacci made the first move, using Sonido to appear before the Tetramand and lash out with her chakrams. Four Arms sidestepped, just managing to dodge her attack but then Mila Rose appeared right beside him, swinging her blade. He managed to dodge the blow when something else struck his leg, forcing him down on one knee. The attacker, Sung-Sun with her sai peeking out of her long sleeve, gave him a small but smug smirk of her own.

Seeing their opponent down gave Apacci confidence as she moved in for another strike. Thinking quickly, Four Arms scooped up some sand and threw it in her face. She screamed in outrage and indignation as she tried to brush the sand from her eyes. Four Arms took advantage of the opening to grab and toss her into her teammates, who only had enough time to widen their eyes before Apacci slammed into them. All three sprawled onto the ground in a tangled mess of limbs. Lilynette snickered at the state they were in.

Four Arms grinned, putting his hands on his hips. "Gonna have to do better than that."

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"So he has experience fighting multiple opponents," Harribel noted.

Lilynette looked up at her. "You're not upset? Your Fraccione isn't doing too good."

"The training has only just begun," Harribel said in a matter-of-fact tone. "And if they do lose, this fight will serve as motivation for them to become stronger."

Lilynette couldn't help but smile. At least the Third Espada was a good sport about this. She doubted someone like Baraggan or Grinko would've been as considerate in regards to their Fraccione.

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Back at the "battlefield", Apacci pushed her way out of the pile that was her, Mila Rose, and Sung-Sun, glaring daggers at the alien hero. "Don't think you've won!" she shouted.

Mila Rose and Sung-Sun got to their feet. "That was impressive," the latter conceded grudgingly.

"We can't give up," Mila Rose said tensely, narrowing her eyes at Four Arms. "We can't let Lady Harribel and Lord Aizen think their faith in us is misplaced."

"Of course not," Sung-Sun said, slightly irritated. "But we'll need to be careful."

Four Arms tilted his head and crossed both sets of his arms as he watched the girls talking amongst themselves. He brought two hands to his mouth. "Hey!" he shouted. "You three finished? Or are you ready for more?"