A parent's love for a child is the most precious thing on Earth. This is a story about Inko and Hisashi's dedication, devotion, and love for their son, Izuku. It is odd to have one yandere parent. Having two yandere parents is a crime. Ladies and gentlemen, may we present you, 'Izuku's Yanderants!' Warning: this story involves incest. Don't worry, no yaoi present in this story (just a father's obsession over his son's happiness).

Hisashi wouldn't like to describe his obsession with his son as peculiar. It wasn't anything sexual as he was madly in love with his wife, but he wanted his son to experience sure happiness. Of course, it meant anyone or anything outside of the family who wanted to give him that said happiness would face his wrath. He couldn't promise the results of his method would prove fatal or permanently maimed them. He wasn't exactly a psychic.

He held the tiny picture frame of his beloved son in his bunny costume when he was three years old. His wife showed her love through each and every stitch. It was their love as it was his money that paid for it. After all, he would do anything to show his undying love and affection for his son.

There was a knock at the door that interrupted his thoughts. A cringe feeling appeared as it was his boss, Sir Nighteye. "Evening, Midoriya."

He produced a fake smile. "Evening, boss!"

"I wanted to see if you could stay a while longer to work on these files with Kaoruko for me," he asked. "It would be quite a help."

That was going to be a problem as Izuku was back in town for the weekend. He was absolutely certain that he filed for time off to spend with his child. He had to display subtly as Sir Nighteye wouldn't even know the tiny miniscule cracks appearing underneath his desk. Hisashi loosened his tie. "Boss, I would love to work the extra hours of losing sleep and time with my family but tonight isn't the night."

"And why is that, Midoriya," asked the boss.

"My son is in town and I need to spend some time with him before he leaves."

"Mr. Midoriya! Are you aware that business never stops. It never sleeps?"

Hisashi kept a calm composure. The fire-breathing father was trying not to produce any homicidal thoughts. With his permanent return back to the city after many years of absence, he had made a promise that whenever his son would return, all time would be dedicated to him.

"Yes, sir. Acutely aware."

"So, it means that as a company, we must work hard," he said with a glaring look. "Even if it means sacrifices." He produced a smile. "So, have my report ready and on my desk before 7AM. Remember, this is a company and company means teamwork. Have a good evening. I'm off to see a woman about a prime steak."

Hisashi could see the cracks growing on his desk. The nerve of this conniving bastard. Does he really think I am going to lose any more time with my precious son because of his excuses for his perverted laziness? I know he is going out with some other man's wife. He slammed his desk, causing the picture frame beside him to fall to the ground.

Hisashi felt as though a record player skipped. The shards of glass indicated how seriously pissed he was when seeing the picture of his son. The very photo frame Izuku handmade for him. Hisashi had enough. If Sir Deadeye wants some work, I am going to give him some work. Hisashi reached into his pocket and grabbed his cell phone. He was blessed that as a salaryman who works in the IT department, he was gifted in the works of computers.

It was quite unfortunate that Sir Nighteye's date with another man's wife was going to be ruined. Yet again, would his mistress look at him the same after finding copious amounts of pornography on his harddrive?

Hisashi tried his hardest to contain his grin as he punched the numbers to make contact with a certain group of people in search for online sex predators.

"Perverted Justice?! Yes, I am a concerned citizen wanting to report an individual by the name of Mirai Sasaki."

"Yes, I believe he is in possession of pornography containing Filipino boys."

"Look, this is concerning. He is a Pro Hero and is setting a poor example. Saving lives, but destroying others."

"If you want to bring Chris Hanson, then do what you have to do. Ok, thank you!"

Later that evening….

Hisashi was on his way home via the subway when he received a phone call from his wife. Of course, he wouldn't forget purchasing some jewelry for her. And a trove of All Might merchandise from Akihabara for his loving son.

"Evening, dear," said Hisashi lovingly.

"Hey, love," replied Inko slowly. "I wanted to warn you that our little Icchan is a bit upset." Immediately, the emerald-haired father gripped the ends of the chair. Who in God's great Earth would hurt his son's precious feelings?

He had to maintain composure without alerting those around him. "Really? What happened?"

"Little Ochako dumped him for Kacchan, sweetie," replied Inko sadly. "Our sweetheart isn't taking it very well."

THAT POINTY EYEBROW BITCH! THE VERY ESSENCE OF PUS AND SCUM OFF OZPIN'S LIMP DICK! WHY WOULD YOU DUMP MY PRECIOUS SON?! YOU'RE POOR! DID THAT SPIKY HAIRED BASTARD PROMISED TO BUY YOUR GOVERNMENT CHEESE IF YOU SUCKED HIS TINY DICK, YOU FUCKING WHORE!

"That doesn't sound good," he said gently.

"I know! He has been sobbing ever since he came home," she said to her husband. "Can't get him to leave his room. Even his favorite katsudon and honey buns aren't enough to sate his tears."

"Our poor cinnamon roll," said Hisashi. "Hopefully, these gifts I got for him can ease the pain."

"Oooh," said Inko happily. "Even that special one for me?!"

"Only for the best!"

"And that's why you're the best."

"You're my silver medal! Goodbye!" Hisashi hung the phone. He cursed under his breath to know that ragged doll bitch dumped his beloved son. She was in his home. He allowed her to sit on his couch. Eating, pissing, and shiting in their humble adobe and that is the thanks he gets? Now, she wants to be the town bike and ride along Katsuki?

Hisashi wasn't going to have this. He forbids it. Ochako wasn't going to break up with Izuku unless it was on Izuku's terms. He should have known better as he felt that she was evil and rotten to the core.

And for that, she and Katsuki needed to die.

However, he wasn't going to harm the wench and her jizz rag.

At least not yet. He has to be sure that his beloved son was well.

Suddenly, an idea just popped off in his head. Admittedly, it was a bit unusual in the terms of legality and societal methods. Nevertheless, it was for the sake of his son's happiness.

About twenty minutes later….

Izuku discarded the third box of tissues into the trash can. He was lying in bed listening to the odes of Chicago. Tears continued to crest, aching his heart, and gnawing his soul.

His first girlfriend, only to be taken away by his so-called best friends.

Not even a day into the breakup and on social media, Ochako and Katsuki announced their relationship. Photos of their lovey-dovey moments ceased to exist, only to be replaced by Katsuki and Ochako's official profile of them kissing underneath the Sky Tower in Tokyo.

Seeing that made the teen burst into tears.

Meanwhile, Inko stood at his door, gripping her apron tightly to see her torn son in a disarray.

Her thoughts were interrupted when seeing Hisashi entering the residence.

"I'm home," he announced to Inko.

Inko rushed to the entryway. She and Hisashi shared a kiss followed by an embrace. She was surprised to see the abundance of shopping bags.

She whistled. "Wow! You went all out!"

He nodded gently. "Only the best for my loves." He gave her another peck before looking at Izuku's bedroom door. "Still crying?!"

"Alas, yes!" She gripped her apron. "Oi! His first girlfriend, only to be NTR'd in the end by his best friend."

Hisashi sighed heavily as he sat on the stoop to take off his shoes. "I don't know why you even hang out with Mitsuki if her son is a conniving bastard."

"I know, dear, but she is a good woman at heart."

"Not enough if she allows disrespect in the household."

As he was putting on his house shoes, he was met with a nudge to his shoulder. "Listen, sweetheart. Understand my reasons for taking care of Mitsuki. She has her uses, especially with a certain husband in the fashion industry."

Her tone was quite alluring, seductive if one may add. However, it was such a tone that even Hisashi could understand her reasoning.

Great minds think alike. After all, he wouldn't have married her if there wasn't any congruence.

"Baby, we aren't neutralizing anyone or anything right now," said Hisashi. "We have to be careful as we don't want to arouse suspicion."

"I know," she said. "I'm afraid that it is too late."

He sighed. "I am not surprised, Inko dear."

"You know how I feel whenever someone hurts one of my precious treasures." She gripped his shoulder tensely. "Bad things can happen."

"They certainly can and certainly will," responded Hisashi. "Trust me the sinister and wicked thoughts of grabbing the tire iron from the hall closet and smash Ochako's brains in for hurting my son." He stomped his foot. "Bet you can't think again for cheating, you fucking slut."

"I agree," said Inko. "Earlier today, Ochako's cum dumpster of a mother wanted me to finish the cake I was making for her husband for his birthday." She produced a smirk. "It's finished. Cooked to perfection and did what the French say for a little something extra."

"You didn't," replied Hisashi.

She giggled. "I hope Ochako and that bitch enjoyed watching him blowing out the candles for that is that last thing they might do." She nodded sinisterly. "Tomorrow is going to be a quite tasty surprise! A cake to die for!" She took off his coat. "Don't you worry about Katsuki," she told Hisashi. "We can take care of that later. However, there is our son that needs us right now."

Hisashi nodded in understanding. "What do you have in mind."

She produced an alluring smile. "Something you and I can both like and enjoy."

Sometime later….

Izuku heard a knock at his door. As his face was covered in saturated tears, he turned over to the side. "Go away," he said loudly.

A moment later, the door opened. "Hey, son!" Hisashi carried a shopping bag in his hand and a plate of a freshly warm honey bun with the other. "I come bearing gifts."

Izuku didn't want to turn around. However, the smell of the cinnamon glaze was entrancing his nose. Also, it wasn't often to see his father. Contesting his feelings, he turned around to his father's side.

Hisashi placed the honey bun on his nightstand. He grabbed a chair from his desk and sat next to his son, handing him the gift.

"What is it," he asked his father.

"Open it," he said with a smile.

Izuku saw the emerald-colored wrapping paper with a large black bow. He unwrapped the present and pulled the box. Upon seeing it, his eyes were glowing.

"Holy Dio! Are...are….are those the...the...the…"

"Yes, sir! The Limited Edition All Might Titanium Boxer Briefs!"

Izuku's mouth began to drool as he had been wanting this particular item to add to his extensive All Might Collection. "The All Might Titanium Boxer Briefs. This is the latest of clothing from his collection. I have checked online for weeks and weeks and weeks and they only had 100 limited to Japan. Of course, I wouldn't mind ordering overseas. Did you have a colleague in America, Dad?! If so, I can…."

Seeing Izuku's ongoing rambling indicated that the gift was worth buying as it took away tears from his precious son's eyes.

"...oh my Esdeath! I got them to add to my collection! Should I wear it?! Wait, not now! I can call Ochako-" The moment of temporary happiness ceased when hearing the festering bowl of pus's name released from his supple lips. The floodgates evacuated his tear ducts as he used the boxers to absorb his sadness.

Hisashi took his hand to Izuku's hair, rubbing it gently. "Son, I know it is hard to lose your first love." Oh, Ochako! You crushed my son's heart. After tonight, Inko and I are going to literally crush yours. And that pomeranian, too! "I wish I could pretend to know the feeling of rejection…." Hisashi wasn't lying as it wasn't often his previous girlfriends would say no.

They knew better.

However, it was the past. Inko was his present.

But, he needed to be certain for Izuku's precious future.

Izuku wiped the tears with his sleeve. "Kaminari, fine! Kirishima, fine! Aoyama, Monoma, even Mineta! But Kacchan!? KACCHAN! He was supposed to be my friend. Why, Dad?! Why, why, why?" He dropped his present to the floor and buried his head back on the pillow.

"I know, sweetheart," said Hisashi. "I know that it doesn't feel good. I know it hurts. But understand this, Icchan! I want you to have the best happiness in the entire world. A bit...a girl like Ochako wouldn't understand that. You want a girl that values your worth, loves you for you, and wouldn't do foul and disrespectful things like going after your best friend."

The emerald-haired son turned his head. Although it was words that he didn't want to hear, it was comforting that his father was showing him love.

"Go and get some rest." He reached over and kissed his son on the cheek. "Tomorrow, your mother and I will make a huge breakfast. It is the weekend, so we can spend quality time together."

"Yes, sir," he softly answered.

"Tomorrow is your day. We will make sure that it is the best day ever." Hisashi rubbed his son's hair again before leaving the room. He gave him one final look before turning the light out. Upon stepping out of Izuku's room, Inko was standing against the wall.

"Is he okay," asked Inko worriedly.

"He will be," he said to his wife. "I'd told him that we will have quality time together tomorrow."

"For the best," she said. "What do you have in mind?"

He took hold of his wife's chin, stroking it affectionately. "Actually, I was kind of thinking about what you do to please me whenever I have a bad day."

Inko blushed. "I know what you're thinking. Give me some time to set things up."

The next day….

Izuku sat up as the smell of breakfast entranced his nose. Brokenhearted and depleted of energy, it still didn't stop his appetite as the scent of French toast, blueberry muffins, cinnamon rolls, fried potatoes, and steak from getting out of bed.

Like Toucan Sam, he followed his nose out of the bedroom.

Upon exiting, he saw something that wasn't part of the decor yesterday.

Magnolia pedals covered the hallway toward the kitchen. He turned to the door and saw a note attached to it that said, "Read Me!"

A thought stirred in his mind. A familiar presence, if one could say. As though he has been in this position in a previous life or maybe it was from a lucid dream.

However, he tried not to worry about it.

He opened the letter and saw that it was from his parents.

Good Morning, Our Precious Son!

Your mother and father are grateful that you are home this weekend. As promised, we want today to be the best day ever. I know this doesn't take back what Ochako and Kacchan has done to you but hopefully we, as your parents, can help you find something to take that pain away.

Your loving parents,

Mom and Dad!

P.S.: We hope this letter distracts you long enough to not expect what is coming next!

He didn't have a chance. He was met with a cloth wrapped tightly around his nose.

"Sorry, sweetheart." It was Inko that spoke to her son. "It is just some goodnight juice. Don't struggle, love. Please, don't struggle. Just relax for Mommy! I have you, Icchan! Just go to sleep! Go to sleep!"

Inko felt her son's body becoming limp. She gently placed her son on the floor. She placed her finger under his nose for certainty.

"He's out," she told Hisashi.

"Great!" Hisashi stood behind her. In his hands were a bundle of rope. "I didn't like the idea of doing this but I felt he wouldn't be compliant. Initially that is!"

Inko nodded in understanding. "Of course, love! Well, if you excuse me, I will get ready for my motherly duty to sate my son's appetite."

"Of course, love. Meanwhile, I will get him set up."

To be continued….