Taboo Manual for Raising a Succubus Girlfriend!

After Yu Yi returned to the Demon Realm, she received many messages from friends on her mobile phone, but no messages from the future.

Given her usually gentle personality, it is impossible that there would be no news at all about such a big thing happening in the demon world. Something must have happened.

At first, Yu Yi thought she had an accident and called her anxiously, but it turned out that she was "out of the circle".

This "outside the circle"...

Could it be referring to the human world?

"This is an emergency. Please let me repeat myself."

Next, the future on the screen said something shocking, confirming Yu Yi's guess:

"The human government is requested to stop the invasion of the demon world. This is a shameless invasion and a blatant scam!"

The future in front of the camera was very angry, his fists clenched tightly, and his amber eyes were burning with anger.

On the other side of the world—

After returning to the Demon Realm in the future, he logged back into his account with a huge number of fans and started an emergency live broadcast.

The entire human world was shocked by this "resurrected" national idol. Major TV stations followed suit, and the face of the future appeared on almost every street and every screen.

Things went surprisingly smoothly. Facing the camera, Wei Lai decided to make the truth of all this public before the town government intervened:

"Everyone, don't be fooled by the human town government. From the very beginning, this has been a scam. Their goal is to invade the demon world in the name of 'justice'!"

"My friend, Ziyin (Ziyin waved nervously at the screen), and I were not killed by the demons during a diplomatic mission as the news said. On the contrary, the people who wanted to kill us were the human governors!"

The voice of the future began to spread, and the entire human world was in an uproar. The crowd who were inciting war stopped and looked at the sincere eyes of the future on the screen.

"A few months ago, Magical Girls Academy gave us a secret mission. The mission was to investigate the situation in the demon world."

"At that time, we were still brainwashed and mistakenly believed that all demons were evil. We agreed without thinking too much and ended up falling into their trap."

After a moment of silence, Mirai began to describe his experience in the demon world in detail...

"I almost died on my first day in the demon world."

"We discovered a strange phenomenon in the Demon Realm. Giant ships were falling from the sky. When we went to investigate, we saw some pitch-black mechanical soldiers."

"At that time, we didn't realize that these mechanical soldiers were weapons used by humans to guard the capital, transported here by giant ships that traveled through space. We mistook them for the Demon King's soldiers and were nearly killed in the confusion."

"However, the human town government still miscalculated. A hero appeared and saved our lives, causing a loophole in their plan."

"Afterwards, we lived in the demon world, and during this time, we realized..."

Future's fingers were intertwined on the table, and her eyes revealed complex emotions.

She was well aware that what she was going to say next might subvert human cognition, have immeasurable impacts, and might even cause chaos among humanity.

but...

She had to do this.

In order not to disappoint those who were kind to her, and to stop all this.

"The demons are not evil."

"There was a kind old lady who, knowing that we were magical girls, still chose to take us in and take care of us as her granddaughters..."

"she..."

"He's a demon."

"A very, very gentle demon."

"It's not just her. The demons in the demon world are all very gentle. It's a utopian world without war. Everyone lives a stable life with their feet on the ground. It's a paradise."

“It’s completely different from what the textbook says…”

"Demons are not evil. They are just like us. They can be timid, confused, afraid, cry, and afraid of loneliness. But even so, they will treat others with the most sincere tenderness."

"It is us, the 'humans', who are 'evil' and want to destroy all this."

Mirai thought back to the old orc who had protected her on the verge of death, and her amber eyes revealed an unprecedented sense of shame.

From the moment she knew that mechanical soldiers were human weapons, she realized the arrogance that was engraved in her bones.

From the very beginning, as a human being, she has never truly let go of her own "prejudice".

In her subconscious, she still believes that "demons are evil", but she has changed the "all demons" in her mind to the illusory "demon king".

The Devil...

It is a target that carries sin.

From the beginning to the end, this "devil" has never appeared, and all evil things are caused by humans.

But even so, they still chased the target called "Demon King" for a long time, never questioning the legitimacy of mankind, until the truth was laid before their eyes and they realized that it was too late.

This is the prejudice that is ingrained in human nature.

"Now, we have returned here, protected by the demons, but their world is being invaded by humans and is burning. This cannot continue. Please stop this 'evil' behavior!"

Ziyin: "That's right, you want all of humanity to bear an indelible blood debt?"

Mochi: "Meow!"

Future's passionate and generous speech swept the entire human world like a storm, and every word struck the soul. Gradually, the situation finally changed.

"Stop the war!"

The crowd, which was in chaos, gradually came to their senses, threw away the wooden signs promoting war, and shouted anti-war declarations.

This voice is still small, and most people are taking a wait-and-see attitude, but a single spark can start a prairie fire.

Of course, there are also voices of opposition.

"Liar, she's been brainwashed by the demons!!"

People also doubted the truthfulness of her words and could not trust her.

But, at least...

The rioting humans stopped and began to think about another possibility.

This is all she can do in the future, but in order to stop the war, she must do her best.

...

"Is all this a human conspiracy..."

After watching the whole process, Yu Yi's mind was still very confused. She blinked her cherry eyes and looked up at Ye Shi beside her.

"Yes."

Ye Shi decisively admitted his mistake and nodded in response.

At the beginning, she made the same mistake and blamed everything on the devil, but she never thought that humans were the real murderers.

No, she had thought about it.

Seeing them carrying out such suicidal missions in the future, she vaguely felt that the magical girl students were planning something, but she didn't expect them to be so cruel.

Blaming everything on the "devil" and then choosing to give up thinking were the root causes of her mistakes.

"Then... what about the Demon King? If the mechanical soldiers are human weapons, then what exactly did the Demon King do..."

Suddenly, Yu Yi seemed to realize something. She looked at Ye Shi's embarrassed expression, then at the empty throne in the distance, her pupils contracting violently.

"Lord Demon King..."

"From the very beginning..."

"Doesn't it exist?"

The shocking truth once again hit Yu Yi's brain.

If that's the case, then everything makes sense.

Why is the Demon King so low-key...

Why can't we find any trace of her no matter how hard we investigate...

Why is there no action even when the war starts...

Why is the Demon Realm's defense so weak...

Why did the records of the Demon King stop hundreds of years ago...

Why is Maria always hiding something...

The Demon King now...

From the beginning, it didn't exist.

"Yes."

Maria confirmed Yu Yi's inference, and a sense of weakness appeared in the depths of her gray eyes:

"When I first took over this position, I also found it hard to believe, but this is the truth."

"M-Ms. Maria, from the very beginning..."

"Yes, I knew everything from the beginning, so I allowed you to investigate without interfering."

Maria coughed twice, wiped the blood from the corner of her mouth, and continued:

"The Demon King has ceased to exist for hundreds of years, but the Demon Realm cannot exist without a 'Demon King'. The people need such a spiritual totem. Before this existence is completely faded, we who know the inside story can only act in the name of the 'Demon King' and pretend that the Demon King still exists in this world."

This is....

The truth about the "Devil King".

"..."

Ye Shi felt very regretful. He never expected that the person he had tried so hard to investigate did not exist at all.

I was tricked by the Magical Girl of the Star again...

Chuzou knew the truth from the beginning and deliberately lured Ye Si into investigating, and also promised to kill this non-existent mission.

What was her purpose, was it just a silly prank in the end?

Was her death also faked?

"Ms. Yoshito..."

Maria came to Ye Shi with a bit of apology, slowly lowered her eyes, and at the same time lowered the black feather behind her and said:

"I'm sorry for not telling you the truth from the beginning, and for keeping you in the dark for so long."

"Then...why did you even tell me the truth?"

Ye Shi asked.

After the war officially started, nothing could be changed. Why did he bring her to this place to tell the truth?

"I want to...use Miss Yoshito's identity."

Maria's next words surprised Ye Shi.

"what?"

"If my guess is correct, Miss Yoshito, you... should be a magical girl."

"....Um."

After his identity was exposed, Ye Si did not hide it and nodded to admit his identity.

"You also know that in this war... the demons have no hope of winning at all."

Maria's eyes dimmed a little, and she said in a sad tone:

"We have no army, no force to rally, and even the 'Demon King' is gone. Just like decades ago, the entire city will burn to the ground."

"Decades ago..."

Ye Shi was suddenly stunned. She suddenly realized that the decades ago Maria mentioned were referring to the last human-demon war.

If the Demon King has ceased to exist for hundreds of years, then what exactly was the "Demon King" that humans fought against in the last human-demon war?

and many more...

The other magical girls in the Old Testament, besides her, chose to break free from human control after the war because...

Do they already know the truth about all this?