The primary function of the Universal Ninjutsu Enhancement Card is to improve the effects of the same type of ninjutsu cards!
In other words, Haruto Saito's card can enhance any S-rank forbidden technique he currently possesses. For example, if he has mastered the S-rank space-time ninjutsu, the Flying Thunder God Technique, he can use this card to upgrade it!
If he consumes this S-rank Universal Ninjutsu Enhancement Card and applies it to the Flying Thunder God Technique, it would be equivalent to eating a second Flying Thunder God Ninjutsu Card! The effects of the Flying Thunder God Technique he has mastered will then double according to the card consumption rule!
The term "universal" means it can substitute for any other card. The S-rank Universal Ninjutsu Card has another function—it can transform into any A-rank ninjutsu card, including forbidden techniques! It could be an ability Haruto already possesses or one he has yet to acquire!
This put Haruto in a dilemma.
His first instinct was to enhance the Flying Thunder God Technique! This ability was crucial, and it would never be a wrong choice to strengthen it!
But!
Some powerful A-rank forbidden techniques also tempted him!
For example, the enhanced version of the Rasengan—the Giant Rasengan—was still an A-rank technique rather than an S-rank one! The Giant Rasengan had far greater destructive power than the standard Rasengan!
There were also secret techniques unique to certain clans, such as the Shadow Imitation Technique, the Multi-Size Technique, and the Puppet Mastery from the Hidden Sand Village of the Land of Wind, all of which were A-rank!
The current effectiveness of the Flying Thunder God Technique was already sufficient for Haruto.
Thus, he hesitated!
With this card, he could gain a rare A-rank technique—one that was difficult to obtain through battle, such as the Shadow Imitation Technique, since he couldn't just go and kill someone from the Nara Clan!
After a moment of deep thought, Haruto was still undecided.
It was a tough choice, as he considered many powerful A-rank secret techniques, even some sealing techniques.
But the opportunity to enhance the Flying Thunder God Technique was too important to pass up!
"Forget it, I'll let fate decide…" Haruto muttered, taking out a die. "Odd number for Flying Thunder God, even number for an A-rank technique…"
He rolled the die.
The die bounced twice, rolled a bit, and then stopped.
Three!
Odd number!
"Enhance the Flying Thunder God…" Haruto immediately placed the S-rank Universal Ninjutsu Enhancement Card into his mouth, bit down, and swallowed it. He didn't want to give himself a chance to regret the decision!
The Flying Thunder God Technique was now considered to have been consumed twice!
The effect doubled!
Haruto immediately felt a heightened perception of the Flying Thunder God's technique formula. This indicated that his instantaneous movement sensing range had significantly increased!
Without testing it, he continued sorting through his cards.
After categorizing over a thousand cards, he started inspecting the highest-ranked ones first, as he had lost interest in lower-ranked ones.
Hattori Ryuno's abilities were incredibly comprehensive, and his card drops reflected that. However, his ninjutsu was more suited for prolonged battles and one-on-one combat, with extremely powerful ninjutsu exchanges. As for his samurai techniques… they were filled with devastating finishing moves!
**Hyakuni-Hachi: Heavy Cannon Slash!**
This was an S-rank samurai technique with an extremely high mastery difficulty! It was considered a forbidden technique among samurai arts. Hattori Ryuno had used this move once in his battle against Haruto, breaking through Haruto's Earth Prison Coffin—but also injuring his own hand!
The power was terrifying!
**Hyakuni-Hachi: Spiral Piercing Stab!**
Another S-rank forbidden samurai technique! Hattori Ryuno had used this to burrow underground at the moment of a massive explosion—just like a drill, spiraling downward with an unparalleled breakthrough ability!
Just like the Heavy Cannon Slash, it was extremely dangerous. Its explosive force was too strong, and if used too close, the user could harm themselves due to loss of control over the power.
**Hyakuni-Hachi: Sky Limit!**
Finally, Haruto reached this card!
Hattori Ryuno's primary instant-movement technique!
It allowed for unlimited instant movement, but every usage harmed the user. It was a speed-type teleportation, temporarily increasing the user's speed several times—or even dozens of times over. In theory, it could boost speed by more than a hundred times, but the chakra requirement was immense, beyond Haruto's current capacity. Even if he could achieve it, the sudden acceleration would tear his body apart!
After reviewing the S-rank techniques, Haruto confirmed that, aside from the three incredibly powerful samurai techniques, the rest were just average!
Nothing too surprising!
Mainly because many of them overlapped with abilities he already possessed!
For example, powerful S-rank Wind Release forbidden techniques… Haruto already had similar offensive abilities. The techniques might be different, but the effects were largely the same!
Haruto only examined S-rank, A-rank, and B-rank cards. Anything below that… he consumed immediately! If anything special appeared, he would feel it, but lower-ranked techniques no longer interested him.
Next, he moved on to non-ninjutsu cards.
He consumed the Soul Fragment Cards first!
Reputation Cards as well!
Then, he stored various recovery cards, including basic and intermediate chakra restoration cards, as well as basic and intermediate healing cards.
Then, something caught his attention.
A **High-Level Healing Card**, with ten times the effect of an intermediate healing card!
Shortly after, he found a **High-Level Chakra Restoration Card**, also with a tenfold enhancement!
Excellent!
These were extremely useful because Haruto had a habit of pushing himself to the limit—even in unwinnable fights! He relied on healing and chakra restoration cards. In fact, the chakra restoration cards were even more valuable than healing cards!
Then, Haruto spotted another critical card.
A **Random Attribute Weapon Card!**
He bit down on it!
A burst of golden light shot into his mouth, then dispersed from his skin, forming golden dots that flowed like water over his shoulder before converging on his right hand.
The golden dots gathered, condensed, and then rapidly expanded, taking the shape of a blade.
**"Ding! Congratulations, host, on obtaining the cursed weapon: Cursed Blade!"**
The blade in Haruto's hand had a dark red body with black curse markings. While its shape was similar to an ordinary katana, it exuded an eerie aura!
"Cursed Blade?" Haruto's mind raced. "What's its special ability?"
"Ability: 'Curse.' Any enemy injured by this blade will suffer a curse. The longer they remain cursed, the more severe the effects. Mild cases include reduced perception and slowed chakra recovery… Severe cases can lead to total mental collapse and death…"
"So strong?" Haruto's eyes lit up. "Can the curse be lifted?"
"If the afflicted leaves the battlefield for a sufficient time and distances themselves from the host, the curse will gradually weaken until it disappears. However, only advanced medical ninjutsu or secret arts specifically designed to counter curses can remove it during battle."
"Hmm…" Haruto was slightly disappointed. "If only it were unbreakable…"
He was getting ahead of himself!
"What other effects does the curse have besides perception loss, chakra depletion, and mental collapse?"
"The cursed individual may suffer continuous bleeding, chakra consumption, hallucinations, or even be transformed into the host's summoned puppet after death…"