Shiro stepped out of the bedroom first, leaving Gwen behind, still humming softly to herself as she washed up after their… intense early-morning "workout." His mind was still buzzing from the two rounds of passionate exertion, heart racing and a grin threatening to split his face. He padded barefoot to the bathroom, the tiles cool under his feet, the steam from the shower curling lazily into the air. Just as he was about to lift the towel and get dressed, a sudden Ding! echoed in his mind—sharp, crystalline, and impossibly clear, as if it had resonated from his very soul.
Shiro froze mid-motion, eyes widening in disbelief. A second later, a pale blue holographic screen shimmered into existence, hovering before him like magic. It cast a faint, ethereal glow across the bathroom, yet somehow didn't interfere with his vision at all.
"My… my cheat has finally arrived?!" he blurted, practically bouncing on the balls of his feet, voice a mixture of awe and giddy excitement. He held his hands up, waving at the screen, trying to touch it. Of course, his hands passed right through. But strangely, it didn't matter—the screen seemed almost designed to coexist with his perception rather than block it.
The hologram flickered for a moment before lines of text began to crawl across the light-blue surface:
[My Daily Sign-In System… activating…1%...20%...50%...75%...90%...100%]
Shiro's eyes gleamed like a child in a candy store. "Ohhh! Ohhh! This is happening! This is real! I can't believe it!" He flailed his hands comically, leaning forward to inspect the screen, even bouncing slightly on his toes as the system finished booting up.
[Activation Successful]
Suddenly, an overwhelming rush of information flooded his mind—like a river breaking through a dam. The 'System' explained itself in meticulous detail, yet in a way that made his pulse race with excitement.
It had two functions:
[Sign-In] – A daily attendance mechanic that granted rewards tailored to the deepest desires of the user's subconscious. Most rewards were copies of items or phenomena found in the current world, though occasionally, something completely new might appear.[Crossover] – The ability to travel between worlds. The destination was random unless the user had previously Anchored themselves in a world, leaving a lasting mark—an impact, a legacy, or even just a reputation. Once anchored, one could come and go at will.
Shiro practically vibrated in place. "So… I can go anywhere? ANYWHERE?!" He spun in a full circle, eyes alight, imagining the possibilities, the worlds waiting to be explored. "I could meet "Waifus! Bitches!" He flailed his hands in the air, as if he could snatch the holographic system itself and shake out all the loot like a piñata.
The hologram shifted, now displaying:
[Location: Marvel Universe]
[You have an available 'Isekai Gift Package.' Would you like to open it?]
[Yes] [No]
Without hesitation—nay, without even a moment of rational thought—Shiro slammed the Yes option like a kid pressing the button on a candy machine.
The hologram shimmered and the rewards appeared, each one listed like a treasure chest opening before him:
[Congratulations:
Unique Skill: Great Sage,Yuuritchi Tsugikuni – Template,Super Soldier Serum,Heart Shape Herb, Extremist Virus]
A small note blinked beneath the list:
[Note: All rewards from the 'System' have their negative effects completely removed.]
[ROB's Note: Good luck]
Shiro's laughter burst out before he could stop it—a high-pitched, joyful noise that echoed off the bathroom walls. He leaped in place like an overexcited child, eyes sparkling with sheer glee. "Ohhhh, this is AMAZING! This is actually… actually real! I can't even… I—I—ahhh!" He flopped onto the floor, hugging his knees for a second, then scrambled upright. "Okay, okay… first thing, I got to test the Great Sage! Then… then maybe—ohhh, so many things to do! I can't even decide!"
Even with the bathroom mirror fogged by steam, he didn't care. He was already racing through possibilities, planning, imagining, buzzing with the uncontrollable energy of someone who had just unlocked a cheat code to reality itself. And somewhere, Gwen's soft humming behind the shower curtain was completely drowned out by his squeals of excitement.
Steam swirled lazily in the bedroom as Gwen emerged from the bathroom, a soft bathrobe loosely draped over her curves. Her hair was still damp, droplets catching the light as she hesitated by the doorway, blinking sleepily. She froze the moment her eyes landed on Shiro—who was practically vibrating with barely-contained excitement.
"Shiro… what—what are you—?" she started, her voice trailing off as confusion clouded her features.
But Shiro didn't wait for an answer. In a single, fluid motion, he darted forward, eyes sparkling with mischief and childish glee. He scooped her up effortlessly, cradling her in a classic princess carry.
Gwen let out a surprised squeak, pressing her hands against his chest. "Shiro! Put me down! This isn't—stop—" Her protests were half-hearted, drowned almost immediately as Shiro carried her across the room. Her robe slipped slightly with the motion, the silky fabric brushing tantalizingly against her skin.
"Shhh…" Shiro whispered, pressing his lips briefly to her temple, his grin mischievous and electric. "No resisting, Princess. Daddy's in charge of… uh, important stuff right now."
Her hands fisted in his shirt, tugging him lightly, but every word she tried to form dissolved into soft gasps as his lips trailed along her neck and collarbone, sending shivers cascading down her spine. Her protests weakened with every teasing touch, every deliberate brush of his hands across the smooth curves of her body.
By the time Shiro reached the bed, Gwen was trembling—not with anger or resistance, but with that delicious, inevitable surrender to the pleasure rolling over her in waves. Her bathrobe had fallen slightly, revealing more than she intended, yet she didn't care; Shiro's grin and sheer energy left her utterly defenseless.
"Shhh… just enjoy it," Shiro murmured, gently setting her down on the bed but hovering over her like a starved child finally getting what he's been dreaming of. "Round three… let's see if we can break the morning record, yeah?"
Gwen let out a breathless laugh, trying to muster a final protest, but it dissolved almost instantly as Shiro's hands, lips, and sheer excitement overwhelmed her senses. Every touch sent electric jolts through her body; every kiss drowned her carefully maintained composure. Her muffled moans and gasps only fueled his energy further, and the bed became a chaotic storm of laughter, heat, and shared desire.
An hour passed, painting golden streaks across the sheets, both of them were a tangle of limbs and laughter, Gwen's earlier attempts at resistance completely forgotten, replaced by a trembling, blissful surrender to Shiro's reckless, joyous passion.
By the time the heat of their previous morning exploits had cooled to a lingering warmth, both of them had dressed. Gwen had chosen something comfortable, slipping into one of Shiro's oversized black shirts that draped loosely over her figure, the hem barely brushing her thighs. Her damp hair still clung to her shoulders, and the shirt emphasized her curves in a way that left Shiro's eyes constantly wandering.
In the kitchen, Shiro was at the stove, moving with casual efficiency, flipping eggs, stirring sauce, and occasionally checking the pan with a precision that would have impressed even a professional chef. But try as he might to focus on the meal, his gaze kept drifting to Gwen.
She walked across the kitchen, barefoot, and Shiro couldn't help but notice how the oversized shirt shifted with every step, how it clung just enough to reveal the curve of her waist and the swell of her hips. Her movements were slightly unsteady as she tried to maneuver gracefully in a garment clearly not meant for walking around the kitchen.
"You're starting again," Gwen said suddenly, her eyes narrowing into a sharp glare. The edge in her voice made Shiro flinch as if she had just thrown a bucket of cold water on him.
Shiro froze mid-stir, holding the spatula like a guilty child caught sneaking cookies. "I… uh… just admiring your… you know," he mumbled, earning an incredulous eye-roll from Gwen.
"No more today," she said firmly, pressing her lips into a thin line as she passed by him, clearly trying to ignore the fluttering heat in her chest.
Shiro's grin only widened, mischievous and infuriating at the same time. "Then… tomorrow?" he asked casually, as if it were the most innocent thing in the world.
Gwen's jaw tightened, and she muttered under her breath, voice low and aggrieved, "You… Beast." She spun away, deliberately pretending not to hear him, cheeks flushed with irritation—and perhaps something else.
Shiro just shrugged, unconcerned. On the outside, he looked calm, almost lazy, leaning against the counter as if nothing had happened. But inside… oh, inside, everything had already changed.
His mind, body, and soul were bathed in [Magicules] thanks to the subtle but unrelenting effect of [Great Sage]. Every muscle fiber, every neuron, every ounce of stamina and reflex had been enhanced without him even noticing at first. It was like his very essence had been upgraded, flowing through him invisibly, perfectly balanced.
Then there was [Yuuritchi Tsugikuni – Template], a legacy that had transformed him in ways words could barely describe. He now possessed all of Yuuritchi's skills, techniques, and battle-hardened instincts. Every move, every decision, every ounce of physical prowess and fighting spirit that had made Yuuritchi the undisputed strongest in the world of Demon Slayer had been grafted into Shiro's being. And with it came the knowledge and understanding of just how monstrously powerful Yuuritchi had been.