Hidden Achievement!?

[Congratulations for getting a girlfriend! (Hidden Achievement complete!)]

[Boa Hancock Template (No Sea Weaknesses) for 'Girlfriend' determined to be 'Anko Mitarashi']

[All Breathing Styles]

Ryu jumped up in shock and clicked on the breathing styles quickly.

[All Breathing Styles: a collection of all breathing styles from the world of Demon Slayer. All of the breathing styles have been strengthened to Sun Breathing as well as have had their effects morphed towards body strengthening as a whole. Note: Not everyone is suitable for any breathing style.]

Ryu's eyes widened and looked at the Boa Hancock template.

[Boa Hancock Template: All 3 Haki, and Sweet Sweet fruit as well as One Piece Physiology. Requires training to unlock Haki and Sweet Fruit. No Sea Weakness or change in psychology.]

Ryu grinned nervously "It won't just appear, right?!"

[Note: The Template will integrate in a dream during the night. The designated user will not discover the existence of the system or Host.]

Ryu let out a breath and patted his chest. His grin faded as he went home quickly.

He tried the Sun Breathing before feeling extreme pain all over his body.

It was too strange, wasn't he suitable for Sun Breathing?

[Note: Sun Breathing isn't correlated to flames and heat. Ryujin Jakka is a flame type Zanpakuto, not a Sun. The comparison of heat is only there for understanding. In actuality the flames are more akin to purgatory flames.]

Ryu understood instantly.

He wasn't special enough to cultivate Sun Breathing…

He tried Flame Breathing and it was much smoother, it even felt very comfortable!

Ryu was happy with this, everyone was different.

He quickly started writing down all the breathing methods and how to use them along with total concentration and total concentration constant as well as the dangers and quirks.

After he was done writing, it was already morning!

He hurried out the door and rushed over to find Guy.

After finding him, he nearly collapsed, saying "Guy!" Guy turned around and patted Ryu's shoulder, "Ryu! Are you ready for training today?!" as he grinned with a thumbs up.

Strangely, there was a sparkle at the corner of his mouth…

Ryu ignored the miraculous sparkle and laid out the breathing methods on the ground, saying "Come and see which is suitable for you!" Guy looked at the books and scratched his head, asking "What is this?"

Ryu replied simply, "I had a sudden inspiration last night and created all these overnight!" Guy was stunned and Ryu continued "They have the effect of strengthening the body!"

Guy sucked in a cold breath of air and Ryu said "Just like that! How did you know!?" Guy was confused and Ryu explained, "These are Breathing Methods, the effect is to breathe in a certain way and intake the maximum amount of oxygen, strengthening your body and enhancing your physical abilities!"

Guy's eyes widened and he looked at the books, shouting in disbelief "You came up with this!?"

A voice sounded, "Came up with what." Guy and Ryu looked over as Kakashi walked over slowly. Guy explained with a dumbfounded expression and Kakashi's eyes widened in shock.

Ryu explained in depth "Each breathing method has a distinct feature, like for example Lightning Breathing will enhance your speed, Rock Breathing will strengthen your endurance, Flame Breathing will intensify your attacking power, Snake Breathing will enhance your eyesight, Love Breathing will make you more flexible, etc."

Kakashi and Guy looked at the books with scorching lights in their eyes.

Ryu added, "Each person is different, you might not be suited for the Breathing Method you choose. If you feel pain, stop and try another one. It should be a soothing feeling, very comfortable."

Kakashi and Guy tried the various methods before finally landing on Lightning Breathing and Rock Breathing.

Anko happened to walk by and joined in, finally getting Snake Breathing!

Ryu was a bit stunned and Anko smiled at him. He suddenly grinned anxiously and she laughed.

Kakashi asked, "Can I give these to Minato-sensei?" Ryu blinked and nodded, "Sure. I brought extras."

He took out a thick book and gave it to Kakashi, who nodded and flickered away. The books that Kakashi, Anko, and Guy took were kept by them while the rest of the books were left in Ryu's house as he went home.

The very next day, Minato appeared again, slapping Ryu's shoulders excitedly, saying that Ryu contributed greatly to the village and that he was really proud of him.

He wasn't stingy at all, calling Ryu a genius.

Ryu grinned nervously at the praises and Minato laughed happily, nearly tossing Ryu into the air with excitement.

He promoted Ryu to Elite Jonin on the spot and offered him an Anbu Position.

Ryu refused him and said that he was happy just contributing to the village. Minato sighed and slapped his shoulders, "You're really great, Ryu. Thank you." before leaving, adding that Ryu could come and see him anytime for questions.

Ryu promised that he would.

And he really did!

A year passed like that~

Ryu went to Minato and gradually became more familiar with him, constantly warning him of dangers in the world and saying that he's been uneasy recently. Minato listened to him and they chatted about different topics.

Ryu really liked Minato's sunny personality. He was very warm. Kushina was also very nice and when Ryu found out she was pregnant, he told her that he heard something from outside recently.

It was something about an attack plan on Konoha, something about a Jinchuriki weakening or something. Ryu stressed that he didn't know what that meant but that Minato should probably know.

Minato furrowed his brows and took it seriously.

Ryu relaxed and felt much better if Minato took it seriously.

The rest of the time was spent training crazily. He even dragged Anko to come train with him before going on dates.

Their relationship progress skyrocketed during this year, only the final barrier was left.

Another thing to note was that Ryu, Kakashi, Guy, and Anko all achieved Total Concentration Breathing Constant!

Their bodies were constantly being improved on top of the normal training so they were getting stronger at an alarming rate.

6 months into the year, Anko revealed that she had been having strange dreams where she felt someone was teaching her strange techniques.

Ryu was 'stunned' and asked if it was an old man that looked like a square. Anko was directly confused and asked him what he was talking about.

Ryu revealed that an old man that looked like a square taught him strange techniques too!

He even clenched his fist, showing her that it turned black.

Anko was shocked silly and stretched her fist, showing the same!

Ryu gasped in awe and Anko got excited, hugging him and saying that she was glad it wasn't just her! She was extremely excited and even kissed him fiercely on the spot!

Ryu was dazed and she dragged him to train with her, revealing that she found out fighting can increase the speed of mastery for these strange techniques!

And so, Sparring with Anko was added to his daily schedule.

Luckily he had 8 years of foundation or else he would collapse with how packed his schedule was!

What was alarming was that the Breathing Technique increased the rate of progress on his template!

Ryu didn't know how much Anko had unlocked at the end of the year but he had unlocked 49%!

It took 8 years to get to 36% but only 1 to get to 49% after getting the Breathing Method!

Ryu was honestly spooked.

He unlocked Armament Haki at 45%...

But it was still not strong enough.

As the night of the Nine Tails attack occurred at the end of that year…