Use the power of the Demon King to destroy those reincarnated in another world

Leonardo sat at the table with a tired look on his face. A month has passed, and as an old man, he has had little rest.

"I'm really going to die. This time I'm really going to die. I'm going to die without a doubt." He muttered, suddenly waking up.

He looked around the room hastily.

No one but himself. He sighed and touched his forehead.

"Mars would be angry if he were here." He said as if joking, and then looked down at the table again. However, in the next moment his eyes became like sharp blades.

"Don't stare at me like that, old man." Where he was looking, a man was sitting on the sofa and smiling. An elegant man with short green hair and square glasses. The man deliberately showed a hint of fear through his yellow pupils in the glasses.

"What's the matter with you? Dark Emperor."

"Hey, can you call me Allen like before?" The man named Allen continued with a hint of loneliness in his voice.

"Went to say goodbye to my nephew and found the house empty. Do you know something?"

"Is it about Nia? I don't know." Leonardo replied with an annoyed look on his face, frowning, "Goodbye?"

"Ah, he's leaving the country."

"He hasn't been in the royal capital all this time. It's not like this happened suddenly."

"It wasn't like this before." Allen smiled.

"It's not that he's not here, it's that he's about to leave. For this reason, he returned the 'Emperor'."

"What!?" Leonardo couldn't help but stood up, "What on earth are you thinking!"

"Calm down. You still haven't changed, you're still so unscientific." Allen continued with a crackling laugh.

"Actually, the 'Emperor' only got it for research activities. Didn't the king say anything? Although the 'Holy Emperor' is very troublesome." Leonardo clenched his fists as he listened.

"Are you going to abandon the country?"

"You're exaggerating. I wouldn't be an enemy at all. Well, it depends on 'his' attitude."

Leonardo was suspicious: "Who is he?"

"Huh? It's someone I met when I was helping you deal with the 'pacifist'." Allen said, and Leonardo was suddenly surprised.

"Since we worked together for that matter, even if I disappear, you should know that there is nothing to blame."

"Only people who suddenly say they won't continue and can't be contacted would say that." Leonardo responded, but Allen laughed.

"I'm sorry. Then, the time is almost up and I have to leave. I regret that I couldn't say goodbye to him. Please say hello to Nia for me." As he spoke, Allen waved his finger and his whole body was immediately covered in black, as if Disappear like dissolving.

Leonardo stared at the spot where Allen disappeared. Both of them actually returned the title of "Emperor"... The sudden incident made him unable to suppress his inner uneasiness.

Walking some distance east of the royal capital, there is a small forest. There are very few monsters there, and it is a place for novice adventurers to gain experience. In the forest, there is a small single-family house. It is not a cleared forest, and there are no traces of human life.

As if suddenly there, sitting in the house was a man staring into space with a bored look on his face, clutching a rocking chair. His hair was messy and his eyes were lifeless, like dead fish.

Next to the man, a man wearing a leather jacket and a clown mask sat on a wooden chair, his eyes falling on a black book.

"Hey, Phantom." The man turned his gaze to the figure and shouted while rocking the rocking chair.

"What's wrong? Kamiya."

The man known as Kamiya once again cast his gaze into the void: "It's so boring."

"......Yeah?"

"Let's play."

"You are like a child." Phantom said, much to Kamiya's disgust. He looked at the book in Phantom's hand boredly. That black book, every page is white paper.

"Is that fun?"

Phantom raised his head and pointed the clown mask at Kamiya's face: "Well, this is a historical fact book that I left behind. I got it through my own magic of illusion. It's not because it's interesting or not, but it's a must-read. "

"In other words, it's not interesting."

Phantom shrugged helplessly: "So, this is for 'me'..."

"Hey! Don't talk about yourself. You will confuse people." Kamiya shook his head and shouted loudly, leaving Phantom helpless again.

"By the way, are they late?"

Suddenly changing the topic, Phantom frowned and nodded.

"Don't worry. Those guys are never late and it looks like there's still time."

"But I've been waiting for an hour."

"You came too early."

"What, that's outrageous." Kamiya pouted angrily, Phantom repeated "like a child" and started reading again. At this time, the door to the room opened with great force.

"Lord Kamiya!" A little girl with two pigtails came in. After the girl came in, she threw herself at Kamiya and looked at him with her golden eyes.

"Oh, Lina, you came so early." Kamiya called the girl Lina, hugged her, and stroked her head gently.

"I'm so lonely!" Lina said loudly, and Kamiya smiled bitterly: "It's just that we haven't seen each other for a few days."

"Miss Lina, you're so rude!" Then a slender woman with long white, transparent hair and blue eyes appeared.

The woman looked at Kamiya stroking Lina on the side of her forehead, and her face bulged. "What's the matter, White. Do you want to be touched too?" Kamiya happily called the woman White and motioned her over with his left hand.

"Master Kamiya, I am like this..." White said, looking at Lina who was being touched again.

"I can't help it, I'll touch you too." White knelt beside Kamiya and buried his face in his chest. Kamiya smiled happily and stroked her head.

"Where is there another person?" Kamiya said.

"Sorry for being late." came a voice from somewhere, and a dark circle appeared on the floor next to the apparition, then transformed into a human form. After the darkness disappeared, the man was revealed.