As the bell rang, students filtered into a third-floor classroom and the first class of the day began—science lab, a.k.a. chemistry.
The instructor, in Hayashi Maki's eyes, was "Red Name," radiating the stench of a sinful soul.
"Hello, everyone. I'll be leading today's lab. I'm Akizuki Kouzou, PhD in Science from Kyoto University. I look forward to working with you."
The young teacher looked fairly stylish, and his mild smile made it easy to win students over.
But… Akizuki Kouzou? Isn't that the male lead from Oni Chichi?
For the record, Oni Chichi is a hentai title about a father "disciplining" his daughters with "love" until the disobedient girls are molded into his shape—a depraved dad, in other words.
Watching Kouzou speak confidently at the lectern, Hayashi Maki narrowed his eyes. If he's marked red, he doesn't get a pass. Sinful souls share one trait: madness.
And madness means unrestrained desire—an unstable person who might do something monstrous at any time.
Even so, if you're going to take him out, you do it for maximum gain.
Hayashi Maki was a demon; he didn't consider himself a good person. In this anime world, if the first person he'd met had been Akizuki Kouzou and the two stepdaughters with no blood relation—the infamous "Akizuki sisters"—he wouldn't have passed up the chance either.
Since he'd decided to erase this "oni-dad," he'd use the scumbag's behavior to create an opening to gain new followers. The heroines from those adult OVAs were the easiest to form contracts with—and the best fit for a demon like Hayashi Maki, who was only getting stronger.
Partway through the lecture, Kouzou suddenly felt a chill on his neck, but he thought nothing of it.
Because of a lab accident, he had lost his male potency. Then, by chance, he met two sisters who captivated him.
He put on a gentleman's act and successfully wooed their mother, Akizuki Kayoko—then formed a household with the two sisters.
Just yesterday, he persuaded his nominal wife to bring her daughters, Airi and Marina, to move into his place tonight.
Thinking of those fair-skinned, beautiful daughters, Kouzou's smile grew even brighter. He could hardly wait to run home.
He'd even prepared a "gift" for the one who had always tripped him up when he was courting Kayoko—the disobedient daughter who often looked at him with disgust: Akizuki Airi.
While Kouzou was entertaining filthy thoughts, Hayashi Maki frowned.
He'd noticed something: whenever he fixed his gaze on a sinful soul, he could hear the person's evil inner voice.
Honestly? Gross.
If he was going to eavesdrop, he'd rather hear a girl's thoughts than some nasty man's.
Disgust aside, Hayashi Maki was pleased. The more skills the better.
With this ability, he could always get one step ahead of a sinful soul's intentions and strike effectively.
In this world, all that was needed was for him—the demon—to cozy up to the heroines and make contracts. As for "oni-dad" types and bleached-blond punks: if they were Red Name, they had to go.
What surprised Hayashi Maki was that Kouzou planned to use a "drug" he'd stumbled upon to go after the twin-tailed blonde beauty Akizuki Airi tonight.
No way Hayashi Maki would miss that chance.
From Kouzou's twisted inner monologue, Hayashi Maki learned a lot. First, Kouzou was sexually impotent and felt nothing for his wife, Kayoko; they lived as polite strangers and he hadn't touched her.
Because of his warped soul, his sights were set on the two sisters, Airi and Marina, and on women younger than himself.
Night fell.
After wearing out his angel Mahiru and tucking her into a deep sleep, Hayashi Maki followed the magic mark he'd left on Kouzou and arrived near the Akizuki home.
The house was lively tonight: the newly recombined family was moving into their new place together for the first time.
Dinner was cooked by the sweet, gentle Akizuki Marina, with her long ash-brown hair.
Her younger sister, Airi, had a small, heart-shaped face; her golden hair was tied into twin tails. A petite frame, black over-knee socks, and generous curves that amped up her allure.
Peering with his demon's magic eye, Hayashi Maki couldn't help an appraisal:
Akizuki Airi—top-tier impish vixen.
However, what's different from the original story is that Akizuki Airi is now a first-year high school student, in the same grade as Hayashi Maki.
She attends Mizutaka Arts University Affiliated High School together with her second-year older sister.
Mizutaka High is also the school where Asada Shino and Aoyama Nanami go.
At the table, Kayoko watched her new husband gently, quietly looking forward to the night—unaware his twisted soul felt nothing for a married woman like her. Disappointment was inevitable.
Marina, warm as ever, urged everyone to eat. Unlike her more resistant sister, she welcomed Kouzou joining the household. Naive Marina didn't know the "gentleman's" depravity and respected him.
That wouldn't do.
Hayashi Maki already had a plan: to maximize benefit, Kouzou would first expose his evil heart—then die.
"True feelings don't win hearts; only strategy does." As a demon, Hayashi Maki wasn't bothered by that truth.
If he wanted something, he'd steal it, seize it, make the beauty his—that was satisfaction, that was joy.
Some human desires reeked of sin; for a demon, the more sinful the soul, the more magic you gained by tearing it apart.
Dinner ended quickly.
Airi didn't so much as glance at Kouzou. "I'm finished," she said, then turned and ran back to her room.
Kouzou narrowed his eyes, smiling gently while thinking vile things: Airi, tonight Daddy will show you the attitude you should have toward me.
He hadn't planned to rush, but that contemptuous look from Airi lit his fuse. He wanted her tamed.
So—tonight it was.
After her bath, Kayoko, cheeks pink, looked at the man beside her. "Kouzou-san…"
Women can be reserved at certain times—especially with a "gentleman." She didn't want to seem too forward and be taken for a wanton woman.
To her dismay, Kouzou appeared to be asleep.
Left with no choice, Kayoko closed her eyes and talked herself down: Kouzou is just tired, not uninterested. I'll wait.
A moment later, she caught a whiff of something sweet—and slipped into sleep.
Or rather, into unconsciousness.
Smug, Kouzou shook the knockout-spray bottle in his hand, got up, and left the room.
Then he strode straight to Airi's bedroom.
Airi, in modest sleepwear, was lying on her bed chatting with friends when the door opened. She looked back on reflex—
—and saw Kouzou, the man she despised, walk in.
"You pervert! What are you doing in here? This is Airi's room! I locked the door!"
Kouzou tossed a ring of keys onto the floor with a self-satisfied smirk. "Airi, this is my house. As your father, of course I have a spare key."
"Disgusting! Using a spare key to barge into your daughter's room—what are you trying to do?!"
Airi glared at him like he was filth.
Akizuki let out an angry laugh, lunged closer, and whipped out a pink spray, blasting it toward Airi's nose and mouth.
"Mm—w-what is… this? Scum—what did you do?"
Airi frantically tried to wave away the strange mist, but her body suddenly went limp and she collapsed to the floor.
Strength drained away, a weird sensation washed over her, and her cheeks flushed against her will.
"Scum, bastard—what are you going to do to me?!"
Panic finally broke through.
Kouzou grinned wickedly. "I just want Airi to be obedient—to be Daddy's good girl. Time's short, Airi. Daddy's coming."
Right in front of her, he moved to undo his pants.
Airi froze, trembling. "N-no—don't. I'm your daughter! How can you—this is a crime!"
She forced herself to move, trying to escape, but her body wouldn't respond. All she could do was watch the scumbag's leering hand reaching toward her—
Before he could touch her, a voice rang from the doorway.
"Dad… what are you doing?"
Akizuki Marina stared at the man in nothing but his underwear, his face twisted with perversion—utterly unable to believe her eyes.
~~~
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