Underboob Cheerleader Beauty

"Mochi, what's wrong? Does something hurt? Is something the matter?"

Eun Chaeyeon asked like some gentle nurse straight out of a porno, pausing mid-stroke on my cock.

The reason was simple — the rigidity of my dick had suddenly dropped, and its size had shrunk right along with it. The fully erect cock she'd been jerking for me was steadily losing its strength.

Of course.

All of it was exactly as I'd planned.

"Kkiuung… kkiuuung…."

I whimpered and whined like I was in pain. And I wasn't even acting — this genuinely hurt.

An H-cup bombshell of a beauty, bare-breasted and bouncing, tenderly caressing my dick… and in the middle of a situation that horny, I was deliberately killing my own erection?

In my past life, it would've been impossible. But the me of now could actually pull it off. Even as a dog, this shouldn't have been doable — just what kind of body had I ended up with?

Still.

Yeah… this isn't easy.

Naturally, it took serious effort. I dredged up every sad story I'd ever seen and forced my lust back down. Real-life cases, of course not — anime. Those production-staff bastards. How the hell could they kill ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠off my favorite heroine like that?

I summoned up all the seething outrage I'd felt as an otaku, and on top of that I started belting out the national anthem in my head. Bit by bit, my erect cock subsided.

Sliiiip—

My shrunken dick slipped free of Eun Chaeyeon's grip all on its own.

"Ah… aah…."

A hollow look crossed her face as she sank down onto the floor. The sight of her sitting there in that filthy, bare-chested state, trembling with worry, H-cup tits fully exposed — it was insanely hot. But I gritted my teeth and held the erection back.

I had to hold it back.

All of this… was for the sake of cosplay sex with her!

Even now I was using my telepathy skill. Right this second, I was broadcasting that I wanted cosplay sex.

She won't figure it out immediately.

But before the day was over, she would. That I might want cosplay sex. That I might be disappointed because we hadn't done cosplay sex.

"Kkiiing…."

I gave ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠her a look like I was staring at something bitterly disappointing — then trotted back to my room on all fours.

"Wait!? Where are you going, Mochi?!"

A flustered Eun Chaeyeon called after me, but I ignored her. Unfortunately, this was a moment that demanded ignoring her.

Guh…!

It hurt. I'd been feeling so damn good.

But she had to be suffering even more than I was. Judging by the way she'd been shaking at the sight of my once-hard cock going soft, she'd clearly been desperate to fuck me.

And then I killed the erection like I'd lost all interest and looked at her like I was disappointed.

She had to be dying right about now.

So hurry up and figure it out.

That what I want is cosplay sex!

I pictured the future that was coming and allowed myself a little grin.

"Why the hell would he do that…."

It was time to head to the gym, but Chaeyeon was in no mood for it. Lying on her bed, she groaned and fretted before letting out a long sigh.

Today's Mochi had started out exactly like yesterday. Dick standing at attention, he'd come running the moment she put on her leggings and tank top to leave for the gym. And Chaeyeon, pretending she had no choice — acting like she was only going along with it while secretly enjoying every second — had given him a handjob.

Just when she was thinking they'd end up having sex the same way as yesterday, her leggings already soaked through with her own juices—

Mochi's cock had gone soft.

With a look like something had rubbed him the wrong way, he'd let out a mournful little whine and gone back to his room.

"What the hell is it, seriously…!"

Thump thump thump.

She pounded on a giant teddy bear and bit down on her lower lip. He'd clearly looked turned on. She had no idea why Mochi had suddenly lost all sexual interest, and it made her furious.

"…Hnn."

Even so, her flushed body was still thrumming with lust. Chaeyeon grabbed the clothes of Mochi's that she'd left on the floor and masturbated with them. Once she'd worked through one good round of release, her head cleared and her mind started turning again.

The reason Mochi's cock had gone limp… the reason his dick had lost its strength… the reason his burning lust had vanished……

"Huh?"

Suddenly, the female cosplayers from yesterday popped into her head. Mochi had approached those two women, rubbing his body against their legs and acting all cute.

And he'd gotten hard….

A thought struck her like lightning.

Don't tell me he's gotten bored of me? Has he fallen for those girls?

No, no, no. That couldn't be it.

If that were true, he never would've come up to me with his dick hard today!

The dejected Mochi had clearly been trying to communicate something to her. It ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠couldn't mean he'd gotten tired of her and preferred those cosplayer girls.

And yet she couldn't shake the feeling that they were connected somehow.

I don't have to jump straight to the worst conclusion.

The reason an excited Mochi had gone ice-cold. The reason he'd gotten hard while flirting with those cosplayers yesterday. Put the two together, and there was only one answer.

"Don't tell me… he likes girls in cosplay?"

Did that even make sense?

But Mochi wasn't an ordinary dog. He was an extremely clever puppy — maybe he'd figured out that those women had been cosplaying.

"That's right! We've watched anime together!"

The characters those two women had been cosplaying were ones Chaeyeon knew well herself. They were the leads from an anime a friend had recommended. And—

They were the characters Mochi especially loved!

Thinking back on it now, it was obvious. Mochi had adored those two beautiful girls. Every time they appeared on screen, he'd bark happily and beam — that was the proof.

In that case, there was only one thing left to do.

"I… I have to cosplay too…!"

Then maybe he'd put his cock in her pussy?

For a moment, Chaeyeon felt like an idiot for riding this emotional roller coaster over sex with Mochi. She wondered whether cosplaying would really make him happy — and somehow, she was certain it would.

She picked up her phone and called someone.

"What were you doing?"

"Do you have a minute?"

The person Chaeyeon had called was her best friend — the maknae of a famous girl group, the same one she'd been on the phone with during last night's walk. A hardcore otaku through and through, she'd even been active as a cosplayer before debuting as an idol.

The reason Chaeyeon, who had never cared much about subculture, had ended up watching so much anime was, of course, because of her.

"I want to try cosplaying. How do I go about it?"

"Um… I just… kind of want to try it?"

She absolutely could not say it was because she wanted to have sex with her pet dog, so Chaeyeon cleared her throat and mumbled vaguely.

"I-It's not like I'm planning to post photos or anything! Th-This is strictly for personal use…!"

"You know people in my family stay out of the media! If I get caught, Mom will actually kill me!"

"…I have my reasons."

She couldn't exactly say it was because she wanted to fuck her pet puppy.

Either way, her friend was grinning. She'd decided to help Chaeyeon wholeheartedly.

When Chaeyeon described one of the characters Mochi had absolutely adored back when they'd watched anime together, the response was encouraging.

"Huh? You've still been cosplaying recently?"

"Can you give it to me?"

"Today! Right now! You haven't gone back to your parents' yet, right? Your dorm's close to my place!"

"So can you give it to me today or not!"

She sounded a little weirded out, but she agreed all the same.

Not long after, Chaeyeon met her briefly in front of the nearby subway station, took the cosplay props, and said goodbye. Her friend suggested hanging out since they'd already met up, but Chaeyeon turned her down and hurried straight home — because her head was already drowning in filthy fantasies of getting her pussy stuffed with Mochi's cock the moment she finished cosplaying.

"Let's see… this goes… like this…."

The wig was on properly. The accessories were all attached. All that was left was the costume itself.

And then, as she was putting it on—

"H-Huh?"

Chaeyeon felt something was off. The clothes… didn't fit.

That was when it hit her. There was a pretty significant difference in body type between her and her friend. Her friend had a smaller ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠chest than Chaeyeon, and the same went for her hips and ass. It wasn't that her friend was small. It was that Chaeyeon was simply much bigger than the average woman.

"Guess I can't wear a bra like this… I'll just put it on without one… The skirt should more or less fit, though…."

Flustered as she was, Chaeyeon forced the clothes on somehow. The result was an extremely tight fit — but she didn't care.

Now I'll be able to have sex with Mochi…!

She'd put this on to have sex in the first place. Cosplay accuracy, presentation quality — none of that meant a damn thing to Chaeyeon.

"Perfect!"

Time to go see Mochi.

Thump-thump.

Her heart hammered with excitement. Her pussy was already wet with arousal.

Chaeyeon walked toward Mochi, who was lying on the living room floor resting.

The sun was starting to sink.

"Mochiii!"

…Hahk.

There before me stood an underboob cheerleader stunner.