"I’m going to train your asshole and evolve it into a proper ass-pussy!"

I was fully prepared to die crushed by the dragon’s asshole from the very beginning.

Logically speaking, I should have died.

I had no idea if it weighed tens of thousands or millions of tons, but I had been smashed under the dragon’s enormous ass. My entire skeleton should have been crushed, my flesh flattened into a thin senbei cracker, and I should have died instantly.

But I won the gamble.

Lucia’s stats were Physical Attack: 1323 and Physical Defense: 2440. She couldn’t even break her own hymen. Thanks to my "Dragon God’s Blessing" skill, I receive 10% of her stats added to my own.

My Physical Defense was 261. I didn’t know the exact calculation formula, but if she was just sitting down normally, it probably wouldn’t count as a very powerful attack. Lucia had been terrified of having her asshole penetrated and had lowered her hips very carefully. Since it was a restrained attack, I figured that with defense equal to 10% of a Dragon God’s, I should be able to endure it...

This was a battle between my defense and the attacking power of Lucia’s asshole.

And I survived.

I could say I won the bet. However...

My whole body hurts.

I might have broken at least one rib...

"Nn..."

"How is it, Lucia?"

"It feels weird... My butt is tingling."

"Raise your hips."

"Okay."

"One more time."

"Eh?"

"Didn’t you hear me? I said raise your hips and lower them again."

"B-but... my butt already feels tingly and strange..."

"That feeling will gradually turn into pleasure."

"R-really...?"

Yeah, I get why she’s doubting me.

Even I used to think I would never buy an anal-themed erotic manga.

Because常识ally, the asshole is the hole you poop from. Everyone is taught from a young age that you shouldn’t play with your anus.

But one day, while reading the novelization of a magical girl eroge, I finally understood the pleasure of being violated anally. I ended up empathizing with the magical girl getting her asshole ravaged by tentacles!

When you take a really big shit, your anus stretches to its limit, and after you finish, the anal sphincter relaxes from all that tension, giving you a wave of pleasure... Anal sex is like experiencing that sensation over and over again, right?

Later, when I got a PC and started watching erotic videos, I began watching mostly Western porn — probably as a backlash from being unpopular in real-life Japan. That’s when I noticed how high the anal ratio was.

Lucia probably doesn’t know this, but in certain regions of my original world, anal sex is actually more common than you’d think.

Once I reached that truth, I started watching almost exclusively anal videos and buying only anal-themed manga. In fact, I even got angry at sloppy stories where the guy just casually sticks it in the ass as an afterthought during normal sex.

I also dislike it when a girl is being gangbanged by multiple men and the next page suddenly has her in double penetration with her asshole being played with. Anal should be developed slowly and carefully over an entire volume. The girl starts off hating it, but eventually becomes someone who actively craves anal stimulation. That’s what makes it good.

That’s right.

Anal erotic manga are growth stories.

I’m drawn to the growth of a girl’s asshole.

"Lucia. Your asshole has the potential to grow."

"..."

"I’m going to train your asshole! I’ll evolve your asshole into a full-blown ass-pussy!"

"Ass... pussy?"

"Yeah, that’s right. A pussy. Come on!"

"...O-okay."

The dragon’s ass rose.

Then it slowly descended again, slowly enough that I could feel Lucia’s hesitation.

Thanks to that, after I finished inserting the club, I could move my head to the center of her anus to avoid fatal injury. If I tried skull-fucking her, the rectal pressure would probably crush my skull, or her sphincter would strangle my neck and kill me.

Every time the dragon’s asshole kissed the ground, I would ejaculate using Wind Pressure Masturbation, and another orc club would disappear.

It was a race: whether my ejaculation stamina would run out first, whether my bones would all shatter and kill me, or whether Lucia would awaken to anal pleasure and cum. The odds were overwhelmingly against me...!

The female knight Ilia had such a weak asshole that she came from a single insertion, but normal girls don’t cum from anal penetration right away.

In the Western anal porn I watched back in Japan, even during a girl’s "first" anal, they could take something the size of an apple and clearly felt it. Of course, I’m not naïve enough to believe the actresses in those videos were actual anal virgins who genuinely felt pleasure. But it is a fact that a well-trained asshole can swallow something as big as an apple. 𝓯𝙧𝙚𝒆𝙬𝙚𝒃𝙣𝙤𝒗𝓮𝓵.𝙘𝙤𝙢

Lucia’s asshole was far wider and deeper than I had imagined. Considering her body size, her rectum could probably fit around twenty of these clubs.

"Come on! Bring it!"

"Haa... haa... It’s tingling... It feels so weird..."

*Gunya... Zubu...*

*Byurururu... Gokin...*

Various sounds echoed through the night forest.

By the time ten clubs had been inserted into Lucia’s asshole, I heard a wet *pichari...* sound.

It seemed Lucia had started feeling it anally, because love juice began dripping from her pussy. The shining threads of nectar hanging down from above, bathed in moonlight, looked exactly like the thread from Akutagawa Ryunosuke’s "The Spider’s Thread" — a miracle bestowed by the gods to save me.

"I’ve been waiting for this moment!"

My body had been half-dead with crushed bones, but the moment I drank Lucia’s love juice like a shower, all my injuries healed instantly.