A New Transfer Student And Gains

A week had passed since the devastating Spatial Quake that had left Raizen High in ruins. The reconstruction efforts had been swift, with the combined efforts of advanced technology and dedicated workers ensuring the school was ready to welcome students again.

Today however at Raizen High, the air in the classroom buzzed with curiosity as Okamine-sensei stood at the front, addressing the students with an excited tone.

"Everyone, let me introduce a transfer student."

The teacher gestured toward the doorway, and all eyes turned to the figure stepping inside.

The girl who entered had dark plum-colored hair tied in her usual loose style. Her confident stance was accentuated as she placed one hand on her hip, her other hand waving casually. With a wide, energetic smile, she introduced herself.

"My name is Yatogami Tohka! Nice to meet you all!"

Her cheerful voice resonated throughout the classroom, and her radiant energy seemed to brighten the mood instantly.

Sitting near the windows, Shido couldn't help but let out a small, helpless sigh as he glanced at her.

'Kotori really didn't waste any time with this' he thought, shaking his head slightly.

Though he already knew from the anime that this moment would come, experiencing it in person carried a strange sense of gravity.

Seeing Tohka stand there, unflinchingly cheerful and confident, made the whole situation feel surreal.

His gaze flicked toward the white-haired girl seated nearby, Origami Tobiichi. Her stoic expression remained unreadable as ever, her eyes trained on the front without betraying a single emotion.

Shido let out a soft sigh, knowing that Origami had likely already assessed Tohka real identity with her sharpness.

'This feels so much heavier than the anime', he mused, resisting the urge to rest his forehead on his palm.

Yet, seeing Tohka's bright smile and oblivious innocence brought a sense of warmth to the situation.

Tohka, blissfully unaware of the attention she was drawing, strode confidently toward her assigned seat.

Despite the curious murmurs and occasional glances from the other students, she carried herself with the same uninhibited energy Shido had come to expect.

As she passed by, she briefly turned toward Shido and grinned, earning a faint smile from him in return.

'Looks like my days are going to be anything but quiet now.' Shido thought with a resigned chuckle.

The class quieted as Okamine-sensei resumed her instructions, yet Shido's thoughts lingered on the unexpected new dynamic in his already chaotic life.

After class, Origami hurriedly left without saying a word, likely called away by the AST.

Meanwhile, Tohka had been teleported back to Fraxinus for a checkup on Kotori's orders, leaving Shido by himself.

The late afternoon sky was heavy with dark clouds, signaling the arrival of rain. Walking alone along the quiet streets was a rarity for him. Shido let his thoughts drift while pulling up his system interface. It was time to review the rewards for completing Quest 1.

[Quest 1 Completed: Seal Princess's Spirit Power.]

Rewards:

Concept of Multiply (Advanced Level)

Skill Ticket Draw x1

200,000 EXP

50,000 SP

30,000 SF

Shido's eyes lingered on the highlighted reward: Concept of Multiply (Advanced Level).

"As far as I remember this ability belongs to Kusakabe Kagami..." he murmured, recalling her from Rakudai Kishi no Eiyuutan.

As a Blazer, her ability allowed her to manipulate the concept of multiply, essentially increasing the number of objects or phenomena she chose.

It was an exceptionally powerful ability, offering boundless possibilities if used creatively.

Shido viewed the description and read it.

Concept of Multiply: The power to multiply objects or phenomena.

Advanced Level: Allows precise duplication of complex items or concepts at an energy cost relative to complexity.

Current Limit: Can multiply up to 50 instances simultaneously.

A grin formed on Shido's lips, ideas already brewing in his mind.

'What if I buy Noble Phantasms and multiply each of them, then store it on Gates of Babylon.'

The mere thought made him really excited.

'This skill was only at Advanced Level, what if it was at Transcendent Level? Maybe the limit will reach 10,000 or maybe 100,000? '

Shido began laughing silently at this idea, if he can multiply Excalibur then... Shido didn't want to continue thinking as this was too much for him right now. 

It was at that moment that he noticed that the trio Ai, Mai, Mii exited a Convenience Store and was looking at him as if he was a creep.

"Look, Shido is laughing like a weirdo."

"Maybe he's planning to do something weird to us."

"That's so lame."

Looking at the comedic trio spouting bizarre assumptions, Shido could only sigh inwardly.

'Damn it, these three are really...'

Shido can only force a laugh, scratching his cheek awkwardly, trying to shake off the awkwardness.

Then he quickly walks away from them so they would stop their teasing, turning his attention back to his rewards.

He noted the Skill Ticket Draw, which he decided to save for later. Then came the considerable boost in his stats, 200,000 EXP.

The stream of experience points had raised his level to 34, nearing the gap between his and Origami's levels.

However, he noticed that his level only raised by 5 levels with 200,000 EXP. When he received 600,000receives EXP from the Hidden Quest, he leveled up more than 20 times, but now... 

The amount of EXP required to level up had grown significantly as Shido's level rose.

"This is not so bad."

He mused, pleased with how the system rewarded progress.

Even without participating directly in battle, completing quests had pushed his growth forward significantly.

He chuckled, thinking that soon he would be more prepared for combat, especially now that he had a concept of Multiply.

Stopping in his tracks, his shoulder suddenly trembles then an exaggerated laugh comes from his mouth. 

"Haha... Seriously, I'm getting all this just a few weeks after reincarnating!"

He gasped for air after his bout of laughter, brushing back his hair as he regained composure.

Beyond the stats increase, he was elated with the 50,000 SP and 30,000 SF, invaluable for future upgrades or summons.

Yet, a pang of disappointment hit him when he noticed 0 WP listed among his rewards.

"Well, I can't be too greedy." Shido muttered, shaking his head.

Optimism soon returned as he pondered the countless possibilities his newfound power offered.

However, something caught his attention when he checked his status, something had appeared, accompanied by further enhancements to his stats.

His curiosity piqued, and Shido's brows furrowed as he examined the addition closely.

Name: Itsuka Shido

Level: 34

Race: Spirit (Unsealed)

Class: None

Attributes:

STR: 69 → 88

VIT: 57 → 68

AGI: 60 → 74

INT: 76 → 90

Charm: 15 (No Change)

Luck: 20 (No Change)

Skills:

Auto-Translation

Interdimensional Traveler

Sharingan (Three-Tomoe)

Swordsmanship (Basic Level)

Anos Voldigoad's Magic (0%)

Concept of Multiply (Advanced Level)

Inventory:

Elucidator C

Random Skill Ticket (2x)

Random Summon Ticket (2x)

Vitality Potion 1x (Low Grade)

Spirit Mode

Astral Dress: Adonai Tefferet

Angel: Orifiel Machashevet

Spirit Integration:

Reine Murasamase (Phantom)

Yatogami Tohka (Princess)

Constitution: Spirit Body

SP: 351,000

SF: 80,000

WP: 3,000

As Shido reviewed his status, excluding the addition to his attribute stats his eyes widened in astonishment when he noticed that his mana drastically increased, no, it wasn't just increased. 

It was at least twenty times stronger than before.

A palpable surge of energy thrummed beneath his skin, filling him with a sense of power he hadn't felt before.

He didn't immediately celebrate, however.

He had questions to the system. He called out mentally, hoping for an answer.

"System, why did my mana rise so much?"

The system's voice echoed back through his consciousness.

[The boost in your mana is due to the absorption of Princess's Reiryoku. As her power was sealed within you, it greatly enhanced your mana capacity.]

[Even if Princess were to suddenly regain her Reiryoku, your mana would remain permanently boosted, unaffected by her fluctuations. The increase in your mana will be permanent.]

Shido blinked in surprise, recalling his kiss with Tohka.

Her Reiryoku had been sealed within him, and now he understood why his mana had grown so significantly.

It wasn't just a temporary, it was a permanent boost. His mana capacity had increased in accordance with the quantity of Tohka's Reiryoku sealed inside him.

Even if Tohka regained her power, his mana would remain at this new, elevated level.

There was no need to worry about losing this power. The boost would remain, and it wouldn't affect Tohka's ability to use her Reiryoku at all.

A glimmer of excitement sparked in his eyes. He could seal more Spirits, each powerful one increasing his mana pool and strength!

Shido asked eagerly, "So, if I seal more powerful Spirits, will my mana get even stronger?"

[Correct.]

[Each Spirit sealed within you contributes to an increase in your mana. Sealing stronger Spirits will multiply the benefits, expanding your mana capacity even further.]

Shido couldn't help but feel intrigued.

The idea of growing stronger, of expanding his mana by sealing Spirits, was undeniably appealing. However, his excitement was tempered by his resolve.

He reminded himself that his main goal wasn't to gain power for its own sake, it was to save the Spirits.

To free them from the torment and danger they faced every day.

Even so, knowing this ability could help him in his mission was a comforting thought.

When he was still in thought, Shido suddenly realized something

"Hey system, I've been meaning to ask this but..."

"How can I use Sharigan and Reiryoku when what I have is mana?"

This is the thing that confuses Shido very much, he just always forgot to ask the system every time.

[Host's "Mana" is universal, it is applicable to be used on any skill or technique.]

"So if I use Sharigan, my mana will automatically convert to chakra?"

[No Host, your mana will be directly consumed and there will be no conversion of energy when using a skill.]

[But if Host receives an increase of other energy like Reiryoku then it will automatically became part of you mana,]

"I see..."

Shido began to digest the knowledge that was given by his system.

'So if I use any skill from another world with foreign energy, I can still utilize it with mana, but if I absorb those foreign energies like Reiryoku, it will automatically convert into mana, effectively increasing my total mana capacity.'

This realization opened up endless possibilities for integrating abilities and energy systems from other worlds seamlessly into his own.

His confusion was now answered making him sigh in relief.

But then, another troubling realization crept into his mind.

Reine...

He thought back to their unexpected interaction, the kiss that had sealed her power.

Surely, with Reine's Reiryoku sealed inside him, his mana should've boosted even more, right?

He paused, addressing the system mentally, "Wait, if I sealed Reine's Reiryoku as well, why didn't I notice any extra boost?"

A brief silence followed before the system responded.

[The mana boost from sealing Phantom's Reiryoku has already been factored into the current increase.]

[Host just didn't notice it because you were focused on integrating Anos's Magic, which temporarily diverted your attention.]

[Additionally, the increase from Reine's Reiryoku was subtle and blended into the overall boost, making it less apparent.]

Shido's face stiffened slightly. The explanation made sense, but the awkward memory of how he had accidentally sealed Reine's power with a kiss left him feeling more awkward than before.

The system had seamlessly integrated the boost from Reine's Reiryoku, and he hadn't even realized it.

With a sigh, Shido shook off his unease.

His focus returned to what truly mattered, helping Spirits like Tohka reclaim their lives.

"Saving them comes first." Shido muttered to himself, his determination unwavering. Still, a small grin tugged at the corner of his lips.

The strength he was gaining wasn't just his, it was a tool to ensure that the Spirits he encountered would never have to suffer again.

________________________________

Any Energy → Mana

Mana → Any Skill