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At Kirisu's home, Yuto sat across from the pink-haired beauty on a plush gray sofa.
"Close your eyes. Feel the magic flowing inside you, then try to guide it along the pathways."
He held her soft hands, his focus unwavering. Mana circuits are unique nerve pathways that convert life force into mana.
"Ugh…"
Kirisu Mafuyu's pretty face twisted in discomfort, her delicate brows knitting together as she struggled to sense the thick mana Yuto was pouring into her.
This mana felt brimming with the boy's vibrant life force, swirling and weaving through her body relentlessly. It set the beautiful teacher ablaze, her pale skin flushing with a deep crimson hue.
A moment later, she couldn't take the prolonged intimacy anymore.
Breathing heavily, her exhales practically steaming, Kirisu pushed his hands away.
"No more… I can't handle it… .your mana is so hot, so intense, it's unbearable!"
"Teacher, you're sounding way too lewd right now," Yuto said helpless.
He had no choice but to let the mana swirling at his fingertips dissipate.
"Lewd? What's that supposed to mean?" Kirisu snapped, clearly unimpressed. Her willow brows shot up as she reverted to her stern, no-nonsense teacher mode.
"I didn't raise you to be some delinquent!"
As an 'educator,' Kirisu Mafuyu firmly believed that 'guiding students to harness their talents' was the only proper path.
"But, Teacher, you're kinda hopeless at this. I've been teaching you forever, and you still haven't gotten the hang of it," Yuto quipped mercilessly.
"You're calling me hopeless?!"
The pink haired beauty's striking blue eyes widened in an instant. Being openly mocked for her intelligence by her own student? That was beyond infuriating!
"It's your teaching that's the problem. Just….just give me a little more time, and I'll master it completely!"
"Mocking me, huh? Then see ya."
Yuto stood up and started walking away.
"Wait, hold on a sec! You can't just leave like that!"
Kirisu hadn't expected him to be so decisive. In a panic, she grabbed his sleeve, her soft pink lips trembling as she whispered, "Fine, I'll do whatever you say, okay?!"
Yuto turned back, his eyes narrowing playfully. "No take-backs, then. You have to do exactly what I tell you."
"Mm, got it," the pink-haired older sister muttered, reluctantly biting her lip.
It stung her pride to have the student-teacher dynamic flipped like this. But for the power to protect herself against the supernatural, she was ready to give her all.
"Good. Hold my hand."
Once more, he took her small, delicate hand. With a faint smile, Yuto leaned in and kissed her right on the lips.
"Mmph…?!"
Kirisu's eyes widened in shock.
She instinctively moved to push him away.
But then, she felt it, the mana racing through her body suddenly surged, faster and fiercer. That elusive sensation she'd been chasing for so long was finally within reach.
"Don't talk. Focus on the mana's flow and try to open your mana circuits," Yuto instructed.
Under the flood of his overwhelming mana, the pink-haired beauty finally brushed the threshold of magecraft.
Click!
In the next instant, her clogged magic circuits burst open.
A fresh, boundless surge of power welled up inside her.
"That was fast," Yuto remarked.
He moved to keep going, but the pink-haired older sister shoved him back.
Her face burned like fire, her long, black-stockinged legs curling up to her chest as she hugged her knees.
Shame and frustration churned inside her.
"I'm your 'teacher'!"
"So what if you're my teacher? This is a perfectly legit academic discussion," Yuto said with a cheeky wink.
Somehow, that long kiss felt like it had nudged their relationship a step closer.
For an entire day, he and Kirisu dove deep into the boundless cosmos of magecraft together.
Their bond evolved. From kissing to the point where brushing her thigh didn't even faze her anymore.
..........
{A/N : Per FSN's UBW route, mana transfer isn't limited to magi and servants. It can happen between magi's too.}
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