Chapter 402 Obata Natsumi’s Case, Part I*
Edited by: Kanaa-senpai
Fortunately, the detached houses in this neighborhood were spaced far enough apart that as long as you weren’t standing right next to someone, your conversations remained private. After confirming no one she knew was nearby, Obata Natsumi released a breath she hadn’t realized she’d been holding—but the relief was short-lived, her heart immediately starting to race with embarrassing eagerness.
”Aki-kun… what are you here to see Auntie about?” she asked, her voice trembling despite her effort. “I won’t get in the way of you and Yui…”
”Auntie Natsumi, this has nothing to do with Yui.”
Aki’s response only reinforced the resolve that had crystallized in his chest. His eyes met hers, steady and unflinching. “I just wanted to come and comfort Auntie—she’s been so lonely and hollow lately.”
By the time the words left his mouth, Aki had already closed the distance between them. His breath brushed against her ear as he leaned in, pressing a soft kiss just below her ear—smooth and pale as polished jade.
The beautiful, gentle housewife with her Tachibana-red hair trembled from head to toe. A flush spread from her pale, slender neck, climbing higher until it reached her delicate, porcelain face.
”Aki-kun… you’re Yui’s boyfriend,” she managed, her voice barely above a whisper. “Let’s just forget this happened—please, don’t make jokes like this again…”
Obata Natsumi instinctively stepped back, trying to put distance between them.
But her retreat was a mistake. The moment she moved, Aki closed in, his hand reaching past her to pull the door shut behind them.
Click.
The lock engaged with a familiar finality.
Obata Natsumi’s heart lurched in her chest. She knew exactly what that sound meant—and what was about to follow.
”Don’t worry, Auntie Natsumi,” Aki said, his voice calm and smooth. “Yui will understand.”
His arm snaked around her waist, his other hand sliding beneath her knees. Before she could protest, he’d lifted her clean off the ground, holding her as if she weighed nothing.
”If you don’t believe me, you can call her right now.”
The warm, pleasant scent of the boy enveloped her. Obata Natsumi shot him a reproachful look, more embarrassed than angry.
Call her daughter and ask that kind of question? Unthinkable.
”Aki… second floor…” she murmured, her voice barely audible.
Curled in his arms, Natsumi surrendered to the moment. Whether the beautiful boy before her was telling the truth or not, she’d already decided—being with him, even once, would fill the void that had been hollowing her out for years. She wouldn’t be losing anything.
Her only concern was whether there were any condoms in the house—and whether her daughter’s boyfriend had brought his own…
As Natsumi’s thoughts spiraled into anxious speculation, Aki carried her into the bedroom.
The curtains were drawn high, golden morning sunlight spilling across the wide bed. The warmth of the room washed over them, but Natsumi found Aki’s gaze far more heated than the sun. It burned with an intensity that made her breath catch.
She’d seen that look in men’s eyes before, countless times. But somehow, from this boy—her daughter’s boyfriend—it made her heart race with something dangerously close to pride.
Yui mentioned his thing was huge… that every time, she felt like she’d be split open…
Tachibana-red hair fanned across the pillows as Aki lowered her onto the soft mattress. Natsumi’s gaze instinctively drifted downward, fixating on the prominent bulge straining against his trousers. Memories of her daughter’s hushed confessions flooded back—the whispered secrets shared between mother and daughter in the quiet hours of the night.
She remembered it all: the way Yui’s eyes would go dreamy, the way her cheeks would flush as she described Aki’s… endowment. “He’s so big, Mom,” Yui had confided once, giggling into her pillow. “I can barely take all of him.”
Natsumi’s husband hadn’t touched her since Yui was born. By the time their daughter started elementary school, he was barely coming home at all. For years, the only thing she hadn’t had to worry about was money. Beyond that, the Obata household had been nothing but a mother and daughter, clinging to each other.
And because Natsumi had devoted herself to raising Yui, the two were incredibly close—close enough that nothing was off-limits between them. Yui knew about her mother’s hollow loneliness, her aching emptiness. And Natsumi, in turn, knew every intimate detail of her daughter’s love life.
It was that closeness—Yui’s breathless confessions, combined with the fragments of knowledge lodged in Aki’s mind—that made the boy so attuned to the beautiful Tachibana-haired woman before him.
”Auntie Natsumi,” Aki said, his eyes roaming hungrily over her voluptuous figure. “Where are you looking?”
Natsumi’s body stiffened. Caught red-handed, the gentle, demure housewife brought her hands up to her chest, her cheeks burning.
Aki chuckled, low and warm, as he settled onto the edge of the bed. His long fingers gently pried her hands away from her chest. Then, with deliberate slowness, he placed them over the generous swell of her breasts.
”Auntie Natsumi,” he murmured, glancing toward the morning light streaming through the window, “should I draw the curtains?”
He glanced at the shimmering golden light. With no magical barrier in place, his enhanced senses couldn’t guarantee privacy—not when binoculars existed in this world.
I should say no. I should stop this right now.
The words were there, ready on her tongue. But Natsumi’s voice betrayed her, emerging as little more than a breathless whisper.
”…Mhm.”
Whoosh.
The heavy curtains slid shut, plunging the room into semi-darkness. The sudden dimness didn’t bother Aki in the slightest—devil’s night vision was simply part of his physiology, unaffected by any seal or restriction.
In the shadows, Natsumi felt a strange relief. Yet something tugged at her—a faint regret that she could no longer see his face.
Aki caught that flicker in her eyes, that momentary flash of longing, and promptly reached out to flick on the overhead light.
The sudden brightness made the newly relaxed housewife stiffen all over again. Under Aki’s gaze, her body hummed as if with electricity, a current racing through every nerve.
She was too flustered to notice the dark hunger in Aki’s eyes—or the way his throat bobbed as he swallowed.
”Auntie Natsumi,” he said, his voice low and controlled, though a tautness beneath the surface betrayed his desire. He crossed his legs, attempting to hide the massive erection straining against his trousers.
This woman… she’s too perfect. She hits every single one of my buttons.
”Natsumi,” he corrected himself softly, letting her name roll off his tongue.
”Aki…” Natsumi’s voice broke as she gazed up at him helplessly, her limpid eyes shimmering with unshed tears of longing.
Aki didn’t hesitate any longer.
He lunged forward, his body pressing against hers on the plush mattress. Slowly, deliberately, he peeled away the loose homewear clinging to her pale skin, uncovering the generous swell of her breasts.
They weren’t quite as enormous as Kurashiki Reika’s—but they were definitely in the same league. Round and firm, perfectly white and smooth, as if they’d bruise at the gentlest touch. The proportions were perfect, making Aki’s mouth water.
He drew the warm yellow bra out from beneath her, watching as each movement made her full breasts sway and bounce.
Ding.
The bra hit the floor with a soft clatter.
Thump.
Aki braced himself on either side of her, his star-like eyes blazing. His throat tightened as he took in the sight of her—the swell of her chest, the way her skin glowed in the soft light.
”Auntie Natsumi,” he breathed, his voice dropping low, “your breasts are beautiful. May I taste them?”
Natsumi’s fingers dug into the pillow, her knuckles white. She trembled, tried to form the word “no”—but what came out was:
”…Yes.”
A low, knowing chuckle escaped Aki’s lips. He’d known she wouldn’t refuse. Slowly, he lowered his head…
”Ah!…”
Natsumi gasped sharply as his warm, wet tongue swept across her quivering left n**ple.
This is… this is so obscene…
Her grip on the pillow tightened, her legs instinctively pressing together as a wave of pleasure rippled through her.
But Aki wouldn’t allow that. He nudged her long, slender legs apart, slotting his body between them. He hovered over her, not quite pressing his full weight down, his voice a low, husky murmur against her skin.
”Auntie Natsumi,” he purred, “don’t move. I need to savor this.”
Even as he spoke, he pressed the bulge in his trousers—his c**k straining against the fabric—against the soft dip of her triangular undergarment. His lashes lowered, half-hiding his dark gaze as he began to move, grinding against her with steady, deliberate rhythm.
Thump… thump… thump…
The rhythm was relentless—quick and powerful, as if they’d already become one. Aki’s hot, ragged breath ghosted against Natsumi’s ear, and she felt herself flushing like a boiled shrimp, her body bouncing with each impact.
Her magnificent breasts, too large for any single hand to hold, swayed with the motion, creating a mesmerizing wave of creamy flesh.
”Aki… Aki…”
The name fell from her lips like a prayer. She looked up, dazed, only to find Aki panting, his c**k now rubbing against her s*x through the thin barrier of her panties.
A strange, thrilling sensation seized her—a feeling so foreign, so intense, that it stole her breath.
She knew this was wrong. But it had been so long… so achingly long since she’d felt anything like this.
Obata Natsumi had always loved s*x. But her husband had been… inadequate, especially after Yui was born. She’d never experienced that deep pleasure again.
And now, without even truly entering her, Aki was already making her feel things that surpassed every memory she had of pleasure.
”Aki…” Natsumi sobbed, gasping, her voice breaking into tiny cries. “Please… don’t rub anymore… don’t rub…”
—
Summary:
Aki corners Obata Natsumi in her home, using his intimate knowledge of her loneliness and his relationship with her daughter to break down her defenses. Despite her initial resistance, she surrenders to the moment, rationalizing that a single encounter would fill the void in her life. The scene escalates into intimate physical contact, leaving Natsumi overwhelmed by long-suppressed desire and questioning the morality of her actions as she succumbs to the pleasure.
—
Trivia:
Aki possesses supernatural abilities, including devil’s night vision, which functions even in complete darkness.
Obata Natsumi has been neglected by her husband since Yui’s birth, creating a deep emotional and physical void in her life.
The mother-daughter relationship between Natsumi and Yui is exceptionally close, with both sharing intimate details of their love lives.
Aki’s knowledge of Natsumi’s vulnerabilities comes from both Yui’s confessions and his own mental fragments of past knowledge.
Kurashiki Reika is a character with breasts larger than Natsumi’s, establishing a hierarchy of physical endowment within the story’s world.
Aki’s “c**k” is a euphemistic term for his erection, used consistently throughout the narrative.
The setting is established as having a “magical barrier” system, indicating that supernatural protections exist in this world, though not currently active.
The author’s note references “doujinshi,” indicating a self-aware, meta-textual element common in web novel culture.
Notes:
• Obata Natsumi – A beautiful housewife of the Tachibana family and mother of Yui. She has long red hair, a delicate face, and a voluptuous, curvaceous figure with large breasts. Wearing a wedding ring, she appears warm, gentle, and demure, but years of neglect from her traveling husband leave her lonely. Secretly open-minded and longing for intimacy, she acts on her frustrations in an encounter with Aki.
• Obata – Obata Yui is a naive, obedient schoolgirl, the daughter of Natsumi and a well-paid, frequently traveling salaryman. Though not physically present, she maintains a distinct outward appearance reflecting her lineage’s auxiliary supernatural abilities. While balancing her family’s unique magical legacy, Yui listens to Aki and acts as a crucial, discrete foundational pillar for her allies.
• Aki – A tall, handsome high school boy at Kuoh Academy with sharp features, star-like eyes, and a lean, muscular build, he changes between dark and silver hair. As a pragmatic, manipulative Red Dragon Emperor and King-status devil, he wields a sealed god-tier power, Dual Cultivation, and a Great Dragon. He confidently leads a growing harem, acting as Yui’s boyfriend while dominating Yanagi, Hana, Tsuki, and Natsumi.
• Yui – Obata Natsumi’s daughter and Aki’s girlfriend, this Aisu Academy student and basketball powerhouse is a core operative in Aki’s organization. Using B-Rank strength and sensory skills to track flaws, she maintains close ties with teammates. She hardens her resolve by executing yokai as a hypnosis incident heroine, serving as a taboo and comparison in her mother’s encounter with Aki.
• Y – The first initial/part of the name Y Ddraig Goch.
• Tachibana – Carrying the Nao lineage, Obata Natsumi is a red-haired, mixed-blood vampire immune to sunlight who can shift gender until adulthood. Now a wife representing her married identity, she was once suspected in vampire incidents but later cleared. Currently, she is targeted by Aki for a soul contract.
• Kurashiki Reika – A beautiful, proud widow and high-ranking general manager with the maiden name Bael. Owner of a luxury apartment, she is a dominant, sexy career woman with long blonde hair, heavy breasts, and long legs in black stockings. She is the mother of Kurashiki Reina; both mother and daughter share a relationship with Aki from previous arcs.
• Kurashiki – The family name carried by Kurashiki Reina and Kurashiki Reika, associated with a luxury apartment. The family name carried by Reika and Reina. The lineage is connected to Aki through their sexual relationship.
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Edited by Kanaa-senpai.
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