Upon mastering the Sun Breathing technique, Tanjiro began to exhibit his newfound talents gradually: he moved with fluid balance, displayed strength unusual for his small stature, and showed remarkable intelligence in recent days.
Initially, Tanjuro and Kei were unfazed by his actions, until Tanjiro, at just one-year-old, stunned them by catching a rabbit bare-handed—his first successful hunt, catching them completely off guard.
Living in a secluded area with no prior exposure to dangerous bacteria, the family allowed Tanjiro to roam freely around their home. Given this opportunity, Tanjiro seized the chance to pursue his first prey—a rabbit.
Although rabbits were relatively easy prey for an adult human, Tanjiro's status made the catch even simpler. Looking at the rabbit with a sense of pity, he swiftly broke its neck, ending its life in an instant.
[ Taking down a rabbit has earned you 70 experience points (EXP) and 20 System Points. ]
' Whoa, 70 EXP and 20 System Points! Now that's what I'm talking about! However, taking down another human... that's something I just can't see myself doing. Hurting innocent people isn't my style. '
Tanjiro's brow furrowed. The weight of his future pressed down on him. He knew there would come a time when taking a life, demon or human, would be necessary.
Yet, the very thought of it twisted his stomach. Could he reconcile his empathy with the harsh reality of his duty?
[ Congratulations on earning your first system points! As a reward, you've been granted a free shopping ticket, redeemable for any item, bloodline, or superpower. ]
' Wow, I wasn't expecting such generosity from the system! Thank you, God, for this incredible opportunity. I won't take it for granted. '
Upon opening the shop category, Tanjiro immediately searched for something he needed for his current situation.
[ Shop:
1. Primordial Origin Bloodline - 1 quintillion
2. Hyper Cognitive Mastery - 100 thousand
.
.
. ]
" Hyper Cognitive Mastery? This is quite cheap compared to the other expensive items, but I think I really need this perk.
It might not be overpowered, but it's quite useful for me right now. If I buy the most expensive thing in the shop, I might not be able to handle its power. "
Tanjiro considered his options before deciding to buy the Hyper Cognitive Mastery.
[ You have successfully bought Hyper Cognitive Mastery
Hyper Cognitive Mastery:
- This extraordinary perk grants the user unparalleled abilities in various facets:
Instant Tactical Analysis: The user can swiftly assess any situation, predicting outcomes and responding with precision.
Adaptive Mastery: Mastery across diverse fields allows seamless transitions between skills and strategies.
Strategic Brilliance: Genius-level intellect facilitates the creation of sophisticated plans and solutions in real time.
Analytical Insight: A deep understanding of complexities enables effective exploitation of weaknesses and vulnerabilities.
Accelerated Skill Acquisition: Rapid learning and integration of new knowledge enhance overall competence and adaptability.
This perk empowers the user with heightened cognitive abilities, making them exceptionally effective in dynamic and challenging situations. ]
After buying the Hyper Cognitive Mastery, Tanjiro immediately felt its effects. His heightened senses overlapped, and his wisdom increased dramatically compared to his previous self.
He quickly identified and corrected mistakes in his Sun Breathing Technique, adjusting it for optimal performance.
His perception now seemed to slow down time. His already keen sense of smell, present since birth, was further enhanced by the perk.
Now, he could easily distinguish emotions, detect malicious intent, and pick up scents from 2 km away. He could even smell demons who could hide their scent.
With this perk, he could effortlessly pinpoint any animal, like a predator ready to catch its prey.
After all that, Tanjuro and Kei knew their son was a genius destined for remarkable achievements at a young age. They decided to let him grow independently while remaining available to teach him anything he wanted to learn.
Tanjiro was delighted with these developments and decided to impart the powerful perk and the Sun Breathing Technique to Kei, Tanjuro, and little Nezuko.
For him, the greatest happiness was to make his family's life better and healthier.
Tonight, he planned to share his power with them while they slept, ensuring they wouldn't be surprised by the experience if they were awake.
' With this, I can finally rest assured that they will not be harmed in any way with this perk. For now, this is the best I can do for you guys. '
Tanjiro was resolute in his decision, gazing tenderly at his family and vowing to protect them with all his power.
As night fell, Tanjiro rose from his bed and looked upon the three most precious people in his life. He lifted his arm and activated his power of sharing.
Although it didn't require such action, he decided to do it because he thought it was cool.
[ Successfully imparted the Hyper Cognitive Mastery and Sun Breathing Technique to Kamado Tanjuro, Kamado Kei, and Kamado Nezuko.
For sharing your knowledge and perk with your family, you have been awarded 30 SP and 60 AP, activating the "Overly Good Person" title. ]
' Yata! I've got 30 SP and 60 AP. That means I could become 60 times stronger than an average person if I put it all into my strength, or I could be 60 times faster if I put it into speed.
The thing is, I still haven't discovered how to use my SP. How much does it cost to level up a skill? '
With that in mind, Tanjiro opened the Abilities/Skills/Techniques category, where all upgrades were listed.
This category was divided into three subcategories: Abilities, Skills, and Techniques.
He navigated to the Techniques category, where the Sun Breathing technique was located.
[ Technique Category
Sun Breathing Technique Lvl 1 - It features swift, fluid movements that mimic the sun's energy and flames, enhancing combat speed and power.
First Form: Dance (Enbu) - A quick, powerful vertical slash.
Second Form: Clear Blue Sky (Heki-ra no Ten) - A circular slash that can defend and attack simultaneously.
Third Form: Raging Sun (Retsujitsu Kōkyō) - Two consecutive horizontal slashes.
Fourth Form: Burning Bones, Summer Sun (Shakkotsu En'yō) - A continuous spinning attack to hit multiple targets.
Fifth Form: Setting Sun Transformation (Shayō Tenshin) - A backflip while slashing, avoiding attacks, and countering.
Sixth Form: Solar Heat Haze (Enkō Chū) - A high-speed slash that creates an illusion of a heat haze, making it hard to predict.
Seventh Form: Beneficent Radiance (Kiki Onkō) - A spiraling slash used to decapitate enemies swiftly.
Eighth Form: Sunflower Thrust (Yōkatotsu) - A precise and powerful thrust attack.
Ninth Form: Dragon Sun Halo Head Dance (Kagura Hi-no-Tama Yoku) - A series of powerful slashes following a dragon-like pattern.
Tenth Form: Fire Wheel (Kasha) - A spinning vertical slash.
Eleventh Form: Fake Rainbow (Gen'nichi Kō) - A high-speed move that creates afterimages to confuse the enemy.
Twelfth Form: Flame Dance (Enbu no Mai) - A two-part attack with a horizontal slash followed by a vertical one.
Thirteenth Form - A continuous attack combining all the previous twelve forms, developed to defeat Muzan Kibutsuji. ]
Upon witnessing the technique, Tanjiro sighed, feeling that he was quite lucky to be born into the Kamado Family. If not for Muzan, Tanjiro would likely have lived a peaceful life and died on the mountain with his family.
Tanjiro allocated a single point to the Sun Breathing Technique, advancing it to level two.
Adding another point raised it to level three, and he continued this until he reached level 10, achieving the maximum proficiency in the Sun Breathing Technique.
[ Techniques Category
Sun Breathing Technique Lvl 10(Max) - It features swift, fluid movements that mimic the sun's energy and flames, enhancing combat speed and power. Unlocked skills: Transparent World, Demon Slayer Mark ( Limitations removed ) ]
Tanjiro immediately felt his vision change as he saw inside a human body like an x-ray—seeing the heart beating, blood coursing through veins, skeletal structure, muscles, and the brain.
It was the first time Tanjiro had seen such a thing, and he felt disgusted by its realism.
Despite the disturbing sight, Tanjiro was slowly becoming accustomed to it. He didn't deactivate the Transparent World technique; for him, it was crucial to adapt and survive in this world.
While he might be exceptionally kind, Tanjiro wasn't a pushover.
Sighing, Tanjiro thought about his future endeavors, feeling only excitement for what lay ahead.
' I see, so this is what it feels like to be in the Transparent World. Now I understand how Tsukiguni Yoriichi must have felt. Being in a constant state of Transparent World from a young age, Yoriichi must have felt different from everyone else. '
Tanjiro thinks of Yoriichi, the creator of the Sun Breathing Technique, as a character akin to a cheat in the Demon Slayer world — like a maxed-out player being dropped into a beginner's map.
' I only spent 9 SP; that's a small price for such power. It reminds me of an anime I watched, I think it started with the word 'Death.'
It's been so long that I can't remember its full name. All I know is the main character is like a cheat with his system. '
Tanjiro thought about how such a character remained naive about the world and didn't use their full potential during the early phases of the anime.