Chapter 10

The next day after I lost my virginity.

I, Tes, and Rio were about to face the moment of our farewell.

"Rui, do you remember the procedure?"

"I'm fine, Rio. I've got it down."

I poked my head with my index finger, trying to reassure Rio.

We had heard the escape method so many times that our ears were about to fall off. Escaping from the Infinite Prison was that dangerous.

If we failed, we would be trapped in the dimensional gap, living alone for an eternity. That was too scary. We had to succeed no matter what.

"Alright... I'll do it."

I started to channel my magic power to create a sword that could slice through dimensions. Suddenly, Rio approached me with determined steps.

Standing in front of me, Rio took off a beautiful golden fang-shaped earring and handed it to me.

"Here, use this."

"Huh?"

"Here, just take it!"

Confused, I was forced to hold the earring by Rio. What was going on? Why was she giving me her earring now?

"Alright, you have it? Now, channel your magic power into the earring."

Encouraged by Rio, I channeled my magic power into the earring. It instantly grew and transformed into a sword! It was slightly longer than my arm, not straight but shaped like a large creature's fang. The blade shone like gold, so beautiful that I couldn't help but stare. I couldn't even imagine how valuable this weapon was.

"Th-this is...?"

"This is the Dragon King Sword. It's a national treasure made from the fang and scales of the previous Dragon King, my father... ahem, my father."

Given that it was made from the Dragon King's fang, the sword exuded an incredible power. Just holding it made me feel stronger.

"That's an amazing sword. You're letting me use this to cut through dimensions?"

"No, I'm not."

It seemed I was wrong. Then why did she show it to me now?

"I'm giving this sword to you. It's the only memento of my father, so don't lose it."

Rio smiled and said this. No way, I can't accept such an important item!

Just as I was about to say that, Rio covered my mouth with her index finger.

"Mmm."

"I won't let you say 'no.' I'm not giving this to you lightly. If you refuse, you must understand why."

Rio looked at me with a serious expression. She must be sad to part with her father's memento. After all, this was the only thing that made her feel connected to her kin in this empty world. I had to understand Rio's feelings. I thought it was the proper way to show respect for her decision to give me this treasure.

"Alright... I'll take it. I'll treasure it, thinking of you."

"Hehe, that's good."

Rio's serious face turned back to her usual bright smile as she nodded happily. She then taught me how to use the Dragon King Sword and stepped back.

"Alright, give it a try."

"...Okay."

I focused on the empty space and gripped the hilt of the Dragon King Sword tightly. Thanks to my enhanced perception, I could sense the world I was in on the other side of the dimension. I aimed carefully and channeled my magic power into the sword. I further enhanced my strength with my ki and was ready. I was determined to succeed!

"Dimension... Slash!!"

A tear appeared in the space, following the path of the Dragon King Sword. The tear quickly grew into a hole large enough for a person to fit through. It worked.

"Alright... I'm going."

"Yes, go with care, Rui-kun."

"Don't worry so much. I'm used to waiting."

We hugged each other as if to cherish our final moments together. I felt my eyes well up, but I couldn't cry. If I cried, they wouldn't be able to let me go with peace of mind. I suppressed the urge to cling to them and stepped away.

"I'll definitely... definitely get you both out of here. So please wait for me."

I said this, trying hard not to cry, and turned to run. Freeing the hero wouldn't be easy. It might take years or decades.

But so what?

Even if it took decades or centuries, I would definitely save you both!

With this resolve, I jumped into the dimensional tear.

◇

"He's gone..."

After Ruiya jumped into the dimensional tear and it closed, the Demon King Tesarossa muttered softly.

"Yes, now it's just the two of us again. It's been 300 years, but it feels like a long time."

While Rio laughed, Tesarossa remained silent, staring at the space where Ruiya had disappeared.

"What's wrong? Are you already feeling lonely? It's creepy to hear you talk like that."

Rio's words made Tesarossa turn to her silently, kneel, and grab Rio's shoulders firmly to match her height.

"Whoa! What are you doing!?"

Rio was startled by the unexpected force. She remembered the many times they had fought before Ruiya came and felt a sense of tension.

However, the next words from Tesarossa were unexpected.

"I-I'm so lonely~!!"

Tesarossa burst into tears, sobbing loudly. Rio was confused because she had never seen Tesarossa cry or show any weakness.

"Hey, that's embarrassing! Don't cry!"

"Vuuu! Why did Rui-kun have to go~!!"

"Ah, come on! Calm down, you big baby!"

Rio tried to comfort the crying Tesarossa, but she wouldn't stop. It took two hours for Tesarossa to finally calm down.

"Vuuu..."

"Phew, you're quite the crybaby. The Demon King, known as the strongest in history, has really fallen."

"Uu, I'm sorry, Rio..."

An awkward silence fell between them. They had never spent so much time alone together before, as Ruiya had always been there.

"So? What do we do until Rui comes back? Should we fight like before?"

"Stop it, Rio. I don't want to do that anymore."

"Hehe, just kidding."

Through the process of training, raising, and loving the same person, a bond of friendship had indeed grown between them.

They had been enemies before, but that was only because the relationship between demons and dragons was poor. There was nothing personal between them. Moreover, they had mutual respect as young rulers.

"Are you not lonely, Rio?"

"I would be lying if I said I wasn't. But I trust Rui more than anything. So I'm fine."

Rio had lost her parents before she could remember. Her kin revered her as the only one with the blood of the king, so no one ever formed a deep relationship with her. Therefore, Ruiya was her first friend and family.

"I was lonelier before I met him. Compared to that, I'm not lonely at all now."

Rio smiled brightly.

"Rio... you..."

"Hmm? What is it?"

"You're... so cute!"

"Huh?"

Suddenly, Tesarossa pounced on Rio, who tried to resist but was overpowered by her strength and momentum.

"Phew, phew. That's right, if you're lonely, we can distract each other."

"Wait, wait, you don't mean to...?"

Seeing Tesarossa's crazed eyes, Rio realized it was the same look she had when she attacked Ruiya.

"Ah, wait, where are you touching, that's, aaaaaaaahhhhh!!"

Rio's screams echoed through the Infinite Prison.

And Rio earnestly wished:

Please, come back soon.

The full-color vertical comic version of "The Boy Raised by the Demon King and the Dragon King Dominates School Life" is available on platforms like Comic Gard, Piccoma, and MecchaComi! The first 10 episodes are available on the first day, with updates every Friday! Please come and see the vivid depictions of Ruiya and the others in action!