Chapter 9

The training in the Infinite Prison was incredibly tough, and there were many times I wanted to run away.

I nearly died almost every day, and neither Tese nor Rio showed any mercy. I felt like I had crossed the River of Three Crossings multiple times.

Still, there were two reasons I was able to continue.

One was that I could really feel myself getting stronger.

Their guidance was incredibly precise and efficient. Even someone like me, who was a complete failure, could become stronger and stronger. Compared to others, I might have been slow, but that didn’t matter. Just being able to grow, even a little bit, made me incredibly happy.

The second reason was thanks to Tese and Rio, my mentors.

At first, they were scary and intimidating, but as we spent more time together, we gradually became closer, and now they feel like real family to me.

Tese is a merciless drill instructor during training, and I’ve been on the verge of giving up many times. But once the training is over, she suddenly switches to big sister mode and spoils me like a real younger brother. When Tese spoils me, it feels like I really have a big sister, and I can’t help but be affectionate. The other day, I even mumbled in my sleep, “Mmm… big sister…”

When I did, Tese suddenly nosebled and collapsed. I was worried she might have a dangerous illness, but Rio said, “It’s just a mental issue, leave her alone.” I wonder if she’s really okay?

As for Rio, she feels more like a good friend.

She’s mischievous and often teases me. Every time she does, she gets so close that I always end up feeling flustered. Once, I told her directly, “W-What are you saying!! Lusting after a scrawny body like mine… You pervert!!” She yelled at me. While Rio looks like a little girl, to me, she’s a very attractive woman. I tried to explain this in detail, but Rio just turned bright red and refused to listen.

Both of them are incredibly strong, beyond human. The stronger I became, the more I realized this.

Even now, I don’t think I could beat them.

But they weren’t the heartless monsters described in legends.

They were ordinary girls who could get hurt and feel lonely.

When I realized this, I decided in my heart to definitely save them from here.

I never intended to break the promise I made at first, but even without that promise, I wanted to save them.

But to do that, I had to say goodbye to them.

Saying goodbye to them, who were like family, was very painful. It was painful, but… it was necessary.

We’re leaving here tomorrow. Tomorrow is the day when the barrier’s power weakens, which happens at regular intervals.

So today is a rest day to prepare for tomorrow. Right now, I’m lounging in the bedroom of the house Tese created with magic.

It’s been a long time since I had a day off from training. I’m so unused to it that I don’t know what to do.

As I was thinking about this, I started to feel sleepy…

“Haa…”

I tried to fight off the drowsiness a little, but since I had nothing else to do, I decided to let myself drift off to sleep…

◇

Squish.

“…Huh?”

How long had I been asleep? I woke up to the feeling of something soft touching my body.

What is this? I rubbed my sleepy eyes and started to poke it.

“Kyaa♪”

…Huh?

I heard a familiar voice. When I cautiously opened my eyes, I saw Tese lying in my futon. And she was wearing a black, sexy negligee, more stimulating than usual!

“W-What!?”

“Good morning, Rui-kun♪ I was surprised that you’d touch my chest first♪”

Her words made me realize I was firmly grabbing Tese’s large breasts, and I quickly let go!

They were so soft!

But why is Tese here!?

I tried to get out of the futon from the other side, but someone was already there!

“Fufu, give up, Rui-kun. You can’t escape from the包围 of the Demon King and Dragon King.”

Of course, it was Rio on the other side. She was also wearing sexy pink lingerie with frills! I understand Tese’s mischievous behavior, but why Rio too!?

She usually stops Tese when she gets out of control!!

“W-What are you two doing!? Isn’t today a day off!?”

Despite the dizziness from their good smells, I tried to talk to them.

Tese looked at me with a dreamy gaze and started to speak.

“Rio and I were talking. We were wondering if there was anything else we could give you before the end.”

“Y-Yeah…”

“We’ve already made you as strong as you can be with your current body and given you plenty of knowledge. But we thought there might be something else we could give you. And we found it… something we haven’t given you yet.”

“T-That’s…?”

I asked hesitantly, and Tese pulled me close and whispered in my ear.

“Our… f-f-first… t-time♪”

“――――――!!”

With that, Tese pressed her lips to mine.

It wasn’t a brotherly kiss, but a passionate one, like lovers. For a few minutes, she ravaged my mouth, and when she finally pulled away, I felt like my soul was about to be taken away.

“Stop spacing out. This time, it’s my turn.”

“Huh? Mmm!”

This time, Rio forcibly turned my head and claimed my lips. Her kiss was more awkward than Tese’s, but it was endearing, and I felt overwhelmed. Being forced by someone smaller than me was also strangely exciting…

“Phew, is that it? Kissing is surprisingly difficult.”

“Oh, acting so cool. Your ears are red, Rio.”

“W-What!! You’re acting like you have experience, but you’re a virgin too!”

“Oh, it’s bad for a demon to be a virgin!? Rio, you idiot!”

“What’s that, you know-it-all!”

While they were arguing, I tried to escape from the bed.

But just as I was about to, they grabbed my shoulders.

Then they pushed me down to the center of the bed. I felt like a fish on a cutting board, a poor ingredient waiting to be eaten.

“A-Ah… at least be gentle…”

“No can do.”

“No way.”

They smiled and pounced on me.

Oh, Father and Mother in heaven.

Today, I became a man.