The Boundless King: Anime Mania

A full month had passed inside the virtual training ground, though only a day had gone by in reality.

Aki stood in the center of the vast battlefield, eyes closed, body still, exuding an aura of terrifying balance.

His chakra and reiatsu had fully merged, creating a pale purple energy that pulsed with unparalleled harmony. It wasn't just a fusion—it was a complete reconstruction of power itself.

This wasn't just chakra. This wasn't just reiatsu.

It was something entirely new.

He opened his eyes, and the air itself trembled. His cross-shaped pupils flashed with power, his silver-red hair shifting slightly in the pressure of his own aura.

[System Notification]

- Congratulations! You have successfully mastered your foundation!

- Your Chakra & Reiatsu have fully integrated, creating a new power: [Primal Energy].

- Primal Energy: A unique power source that embodies the limitless growth potential of chakra and the raw, dominating presence of reiatsu. It is neither life force nor spiritual power—it is the very essence of both, fused into one.

- Effect: Energy control increased by 50%. Power amplification is no longer linear, but exponential.

Aki clenched his fist, feeling the absurd boost in power. This wasn't a simple 1+1 upgrade—this was multiplicative growth, each part amplifying the other.

Ael watched him with a smirk, arms crossed. "Damn, brat. You actually pulled it off."

Aki stretched, his muscles coiling like a predator ready to pounce. "Of course. I had a great teacher."

Ael blinked, surprised. Then she coughed, turning away quickly.

"…Flattery won't get you out of more training."

Aki chuckled. "Didn't expect it to."

Just as Aki was about to wind down, the System chimed in with an unexpected alert.

[System Notification]

- Hidden Quest: "The Foundation of a True King" – Completed!

- You have built an unshakable foundation, mastering your base before stacking limitless power upon it. As a reward, you are granted a special privilege…

- REWARD: Select Your First Bloodline!

Aki froze, his eyes widening.

"…Wait. Bloodline? Like Kekkei Genkai?"

The System's voice sounded almost amused.

[Correct, Dear~ Since you've done such a good job, you can now choose a bloodline that will integrate perfectly with your Perfect Body and Primal Energy.]

Aki felt a thrill of excitement surge through him.

Ael, however, just snorted. "Tch. Another power-up already?"

Aki grinned. "Jealous?"

Ael flicked his forehead hard. "No, annoyed. But go ahead, pick something broken."

A new screen materialized in front of Aki.

[Select One Bloodline:]

Ōtsutsuki Bloodline – Grants direct access to the genetics of the Ōtsutsuki Clan, allowing the natural evolution of dojutsu, chakra absorption, and godlike energy manipulation.

Uchiha Bloodline – Awakens a customized Sharingan that can evolve into a unique, personalized Mangekyō Sharingan with a tailored ability suited to Aki's fighting style.

Senju Bloodline – Drastically increases vitality, stamina, and chakra reserves, unlocking the potential for Wood Release and insane physical regeneration.

Hoshigaki Bloodline – Enhances water-based abilities, granting superhuman physical traits, aquatic adaptation, and a chakra-enhanced physique that rivals Jinchūriki.

Kaguya Bloodline – Grants the Shikotsumyaku, the ability to manipulate one's bones as unbreakable weapons, and an almost indestructible skeletal structure.

Hyōton Bloodline – Unlocks a superior version of Ice Release, combining wind and water for unparalleled cryokinetic abilities.

Custom Bloodline – ??? – Create a unique, personalized bloodline ability that fuses with Aki's Perfect Body and Primal Energy for unpredictable, limitless potential.

Aki stared at the choices, his mind racing.

Ael, now genuinely intrigued, leaned over his shoulder. "Damn, those are some solid options."

Aki smirked. "Which would you pick?"

Ael shrugged. "Depends. You want pure power, you go Ōtsutsuki. Versatility? Senju. Broken dojutsu? Uchiha. But if you want something truly unique… well, you know what to do."

Aki's gaze lingered on the Custom Bloodline option.

His own, one-of-a-kind lineage?

His lips curled into a grin.

Aki stared at the selection screen, his mind racing with possibilities.

Ael, standing beside him, nudged his shoulder. "Well? You gonna pick, or you just gonna stare at it all day?"

Aki wasn't even listening. Instead, he was focused on something else—

The System's personality shift.

[Come on, Dear~ Don't keep me waiting. Pick something fun, won't you?]

Aki narrowed his eyes.

"…Okay, hold up." He crossed his arms. "Since when did you start acting like this?"

[Hmm? Like what, Dear~?]

Aki flinched.

"…That. What's with the 'Dear' thing? You were cold and robotic before. Now you sound like a clingy girlfriend."

Ael snorted. "Pfft—HA! You just noticed?"

The System giggled.

[Oh? You don't like it? Should I go back to being distant and emotionless?]

Aki hesitated.

"…No, but—"

[Good~ Then focus on picking your bloodline, or I'll pick one for you, Dear~]

Ael doubled over laughing. "PFFT—SHE'S BLACKMAILING YOU! HAHA!"

Aki gritted his teeth.

"…What the hell is happening to my life?"

He shook off the weirdness and turned back to the bloodline options. His eyes locked onto the "Custom Bloodline" option.

[LOCKED]Requirement: Must possess at least two separate bloodlines to fuse into a new Custom Bloodline.

Aki frowned. "So I can't just create something overpowered from the start, huh?"

[Of course not, Dear~ You have to work for it~]

Ael smirked. "Sucks to be you."

Aki sighed. "Fine. Then I'll—"

He froze.

A new option had appeared at the bottom of the list.

[New Option Added:]

- [Random Bloodline] – Obtain a random bloodline from ANY anime, game, novel, or mythology. The result is completely unknown, and once selected, it cannot be changed.

Ael blinked. "Wait… That's new."

Aki stared at it, then at the System. "Yo. Explain."

[Hehehe~ It's a gamble, Dear~ If you're feeling lucky, you could get something broken… or something useless. But don't worry, it will always be useful to your growth.]

Aki felt a shiver down his spine. "That laugh was way too smug."

Ael grinned. "Damn, this is tempting. You gonna risk it?"

Aki considered his options.

-If he chose Ōtsutsuki, he'd gain god-tier energy manipulation and dojutsu evolution.

-If he chose Uchiha, he'd get a unique Sharingan, but it would take time to evolve.

-If he chose Senju, he'd become a regeneration monster with a chakra pool that dwarfs bijuu.

-The other options had their own appeals, but…

The Random Bloodline was a true gamble.

Would he risk it?

Ael leaned in. "Well? What's it gonna be, brat?"

Aki took a deep breath.

"…Screw it. Let's roll the dice."

He pressed the Random Bloodline option.

[System Notification]- You have chosen [Random Bloodline]. Generating…- Shuffling through all possible bloodlines from all worlds…- Selecting…- Selection Complete!

Aki held his breath.

Ael's eyes gleamed with excitement. "What is it? What did you get?"

The screen flashed.

[You have obtained: ??? Bloodline]

[Processing Integration…]

Aki felt a surge of raw, alien energy flood his veins. His entire body shook as his cells began mutating at a rapid pace.

His vision blurred. His heartbeat thundered in his ears.

Ael stepped back. "Whoa—this reaction… this is BIG."

Aki clenched his fists as his body adapted to the new power.

The screen updated.

[Bloodline Unlocked: …]