I'm in Naruto, but the system says I'm in One Piece.

"Eh, a summoning beast?" Hoshino Yu raised an eyebrow and sensed it carefully.

To him, the entire environment he was in at that moment was as if it had been printed out and was displayed in his mind.

A giant bird suddenly swooped down toward him. Even though it wasn't huge, he estimated it was comparable to a tailed beast.

Most importantly, the chakra fluctuations emanating from its body are far beyond those of ordinary spirit beasts.

He had seen summoned beasts before, but none of them could compare to him.

I've never faced a tailed beast directly, so there's no point of comparison, but their enormous size means they must be incredibly powerful.

"Wait a minute, I've been here for four days and haven't seen him..."

"Could we have been set up?"

With doubts lingering in his mind, Hoshino Yu stood bare-chested atop the mountain, taking out a scroll of summoning contracts from his inventory.

"Well, now that we've encountered this, we can't let it go."

A moment later, with his current eyesight, he immediately spotted the bird-like spirit beast rapidly approaching him from afar.

The thunderbird was entirely azure blue, covered in lightning chakra. Its body resembled a raptor, with sharp arcs of electricity at the tips of its wings. Its eyes were extremely sharp, and each flap of its wings brought forth bursts of crackling thunder.

And at that moment,

[You have received a limited-time mission: Defeat a large sea monster alone.]

[Mission Reward: Navy Type 6 Finger Pistol]

Current progress: 0%

"This can be refreshed?"

Seeing the task system refresh the abstract task again, Hoshino Yu's thoughts raced, and he immediately looked at the Thunderbird that was getting closer to him.

At first, he thought he could reason with it, appeal to its emotions, and use sincerity to influence this large, spiritual beast.

But the other party seemed completely unwilling to listen to his explanation, his body radiating azure lightning, and he rushed towards him with a powerful aura!

Hoshino Yu frowned slightly, instantly transforming his body into an elemental form. At the same time, the opponent's originally swift speed now appeared extremely slow to him.

Having gracefully dodged the Thunderbird's first attack, and feeling the gust of wind it brought, Hoshino Yuu, with her hair flying wildly, became interested.

"Perfect timing! I've never used explosive tags before, I should give them a try!"

As he pondered this, several kunai appeared in his hand, each with an explosive tag attached to the end of its handle.

Of course, this was definitely not a kunai attack on Susanoo.

He wasn't the aged Danzo Shimura, and his Thunder Bird summon wasn't as powerful as Susanoo.

As the electric light in his hand flickered, carefully controlling it to avoid affecting the explosive tags, Hoshino Yu stared intently at the Thunderbird that had rounded a bend in the distance and was attacking again. After aiming, he threw it forcefully.

boom--

He swung his arm and threw out a kunai, which produced a piercing sonic boom!

The kunai, crackling with electricity, broke the sound barrier in an instant and appeared before the thunderbird.

But the Thunderbird was no pushover either. Despite its massive size, it was covered in lightning chakra and still reacted extremely quickly.

After barely dodging the kunai, the explosive tag came into contact with the opponent's lightning chakra and exploded instantly behind the thunderbird.

"Tsk, as expected, it's no good. This thing can only bully ordinary ninjas..."

Hoshino Yu stared at the rapidly approaching thunderbird, his hands quickly forming hand seals.

"Fire Release: Fire Dragon Flame Bullet!"

Intense flames erupted from his mouth, hurtling straight toward the Thunderbird!

At the same time, due to the surge in chakra, the Fire Dragon Flame Bullet became even more exaggerated due to his massive chakra output!

Upon contact with the Thunderbird, a violent explosion was triggered within a radius of hundreds of meters.

As for why Fire Release was used?

Hoshino Yu naturally knew that Wind Release counters Lightning Release, but for someone like him who didn't have Wind Release chakra nature transformation, it was like a skilled cook trying to cook without rice.

As for how to calm the other party down, the only way is to beat them into submission first.

With the continuous output of chakra, the power of the Fire Release gradually increased, and a stalemate ensued with the Thunder Bird.

However, Hoshino Yu knew that if they continued like this, he would eventually run out of chakra, so he had another idea.

That is to directly cut off the ninjutsu, use the impact of the extremely fast speed to severely injure the opponent, and then follow up with a genjutsu, which will most likely be able to defeat the opponent.

Without hesitation, Hoshino Yu interrupted his Fire Release attack, then flashed onto the Thunder Bird's head and delivered a powerful punch with the force of a whirlwind.

boom--

With a muffled thud, Thunderbird took the hit squarely and immediately felt a bit dizzy.

Immediately afterwards, Hoshino Yu's fingers flew across the paper, forming hand seals.

"The Technique of Seeing the Netherworld!"

As soon as the words were spoken, the Thunderbird seemed to recall something extremely terrifying. It screamed and its entire body stiffened, falling into a brief shock and plummeting straight down from the sky.

Hoshino Yu naturally wouldn't fall with the other person from this height. After returning to the mountaintop, he quickly ran down into the canyon and waited quietly.

With a body tempered by lightning, the Thunderbird was extremely strong. After falling, it didn't show any signs of serious injury except for creating a deep crater.

He's just had a bit of a concussion from all of Hoshino Yu's actions.

At the same time, the limited-time mission reward has also been obtained.

[You have received a limited-time mission: Defeat a large sea monster alone.]

[Mission Reward: Navy Type 6 - Finger Pistol]

Current progress: 100% (Completed)

[Rewards being distributed... The Navy Type 6 - Finger Pistol has been distributed; please check it in the attribute panel.]

As always, the instructions on how to use a finger gun were fully ingrained in his mind.

Hoshino Yu felt that this skill was quite useful.

By concentrating all the body's strength and energy into the fingertips, and combining it with a high-speed thrust, the hardness and penetrating power of the fingers are comparable to a live bullet, which is equivalent to a core attack technique for precise piercing and single-point defense breaking.

If you add Lightning Release, it's essentially similar to the Third Raikage's "Hell Thrust: One-Hit Hand".

However, finger guns can also be used for long-range attacks in addition to close-range attacks, so they are even more effective.

Seeing the massive, motionless Thunderbird body lying before him, Hoshino Yu took out the Summoning Contract again.

He then laid it flat on the ground and used a kunai to cut his finger so that blood flowed out.

After signing his name on the contract with his own blood, he looked up at Thunderbird.

"Brother Bird, since you can't speak now, I'll assume you've agreed to sign this psychic contract."

As he spoke, he used a kunai to draw a bloody mark on the Thunder Bird. After pressing the blood mark, the two parties "voluntarily" formed a blood pact. As black runes began to appear on the blank scroll and light blue lightning lit up, the spirit contract was completed.

After putting everything away, Hoshino Yu looked at the Thunderbird, which was still "resting," with a smile and said with satisfaction:

"From now on, we'll be partners. Welcome to meet me. My name is Hoshino Yu, and I'm from Konoha. I just became a genin this year."

Please give me your guidance.