Power Leveling!

{Somewhere in Amegakure}

{3:45 PM, 7th Aug 13 Yrs ANB}

{3rd Person POV}

Ren took a deep breath to calm his nerves. He looked at the dead body lying at his feet and stared at the fights going all around him. While the situation might seem chaotic, Ren knew that he wasn't in any danger for the first time in months. 

Jonins and Chunin surrounded him from Suna, and while they might have been stronger, they didn't exert any pressure on him like the S-rank shinobi hiding in the Land of Rain did. What he was contemplating right now was whether he should continue to store the bodies of his kills in his inventory or not.

Till now, he had gone unnoticed, but someone was bound to figure out what he was doing.

'What excuse could I even give, that this is a bloodline ability, and what even am I doing?' Ren thought, he flicked his sword in a practiced motion and the blood attached to his sword was flicked away.

He bent down and grabbed onto the body of a Jonin named Kōki Yūdai, well that was his name. Ren threw the body into his inventory and looked as if several members of Suna's battalion focused on his unusual actions.

"Where the fuck did you store Koki's body," An enraged Jonin named Masaharu jumped at him with his sword in hand as it glowed blue with wind chakra on it.

Ren got ready for a serious fight but sensed someone sneak attack him from behind. He leaned into the backstab and turned around at the last moment, his sword drawing a clean arc as it cleaved a chunin's head from his shoulders.

His focus returned to the fight as he and Masaharu began dancing around each other's strikes. He was faster, but he was outnumbered, so he bided his time and focused on killing the other shinobi around Masaharu. 

Both their swords were made of chakra metal and thus had similar cutting potential. He could force the issue by using more pure wind-natured chakra but that would just exhaust his reserves quicker.

After another two chunin died at his hand, Masaharu realized he would not be able to win as Ren was clearly a sensor. He disengaged and flew through a couple of hand seals.

"Wind Release: Wind Dragon"

A small dragon made purely of wind chakra charged straight at Ren. He was a little envious of the advanced wind jutsu for a moment as he used Air gliding and Body flicker jutsu to trick Masaharu into targeting an empty area.

'I still got hit, huh,' Ren thought as he stared at the couple of gashes that had opened up on his left hand. The injuries weren't deep, and since Masaharu was now farther away, he had a breather to look around and heal his injuries.

In the distance, Konan, masquerading as Hanzo, cleaved through a sizable portion of Suna's front force. The man fighting her with a team of Suna Jonin was someone he remembered seeing in the chunin exams.

...

[Baki Lv 81]

...

'He's not bad, though Konan is having a tough time dealing with them since she can't use most of her actual techniques.' Ren thought.

She was using her paper technique to change her appearance to Hanzo, and even the salamander under her feet was made of a similar material. Though a paper salamander was unable to summon a poisonous cloud, he wasn't sure what the plan there was, but it worked in the end.

While Konan was focused on stalling for time, Ren was interested in Baki, he was the highest-leveled shinobi here and to be honest, Ren wanted to see how much exp he would get by getting his bounty. He should be similar to Zabuza's.

'Level 80 should be a qualitative leap, right? If it could help me bulldoze a couple of ranks, then I would be able to guarantee my safety for longer.' 

During the whole battle, Ren had focused on slowly clearing out the most high-level Jonin, he had killed 7 in this battle alone but he was holding himself back from cashing their bounties. 

"Who are you?" Masaharu asked. He had been unable to figure out a way to kill Ren, and any plan he had devised had failed until now.

'When someone like him appeared, this was not a good idea. We have no intel on Ame's strength, and going head-to-head against them is not a good idea. But then again, the terrain of the Land of River is so unfavorable that we cannot fight Konoha...' Masaharu thought as he looked around.

His eyes darkened as he noticed that although, on the surface level, they were winning, there were several high-quality members of Suna's fighting force missing. He glared at Ren as he motioned for the puppetry division to pepper him with a poisoned needle to buy some time.

'I need to buy some tim-' Masaharu's eyes widened as he saw the bank-masked man's figure vanish, and he exploded with an insane amount of chakra. He knew that the mysterious shinobi had been fast before, but now he simply disappeared from his vision. The touch of cold steel and pain exploded his senses as he found himself tumbling backward.

...

Ren grabbed Masaharu's body and threw him into his inventory. It had been barely a second, but the exertion on his body was already far greater than training. He used air gliding and body flicker to move toward Baki. He had this small window of opportunity, and he intended to take full advantage of it.

Baki hadn't noticed Masaharu's fate, but the exclamation from a group of jonin and his fast reflexes saved him as a sword whipped past his neck. Pain exploded from his neck as the invisible blade of wind extended from the edge of the blade and tore through his neck.

"Ack~ " Baki said as words failed him. His fellow Jonin members tried to save him, but both Baki and the masked shinobi vanished before the masked shinobi dressed in Ame Jonin flank jacket appeared on top of the salamander right beside Hanzo.

...

Takuto looked at this unforgettable scene as a shiver went down his spine. He held his hand up and unconsciously spoke, "Retreat!"

The team of Suna Jonin retreated in unison, but their eyes were still fixed on the masked man calmly standing on top of the salamander next to Hanzo. A green glow emanating from his hands was grabbing onto his own shoulders. 

The shock of seeing high-level medical ninjutsu further amplified the fear as Takuto ordered, "Retreat formation 1!"

A bunch of Suna chunin dropped smoke bombs before they started lobbing kunai with explosive tags attached to them. 'Hanzo' raised his hand and spoke gravely, "Back up!"

Ren sighed as he looked at the barrage of explosions ripping through the ground as the Suna team retreated. 

"Well, that was chaotic. They didn't need to waste so many explosive tags," Ren muttered as Konan gave him a side glance.

...

'Yeah, she definitely noticed the missing bodies!'

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AN: Changed the chapter a little bit.