System Open!

System open!

"Let me take care of that. I'll clean it up!"

"Son! What's this? You volunteering to clean first for once? Finally growing up?"

Her face looked no older than her late twenties—hell, even her voice sounded that young—and no amount of thick, luxurious clothes could hide those massive curves. My mom, Yebin Choi, gave me an approving look.

"Yeah. Gotta work hard from now on! Leave all the housework to me. Hahaha."

I replied in a voice that sounded fake even to me. And yeah, half of that was total bullshit. No plans to actually work hard, but I would be handling all the chores.

"Alright then, Mom's heading out first."

"Sure thing. Have a good one!"

After that, I went ham on the housework. But no gains today. Back when Mom threatened to cut my card, I had no choice but to clean, and that's when the coin dropped out of nowhere. No need for fancy explanations. The moment I picked it up, a proper otherworldly info window popped up for the first time.

Then came the encounter with the Demon Sister and her threats (or whatever they were). She said I'd die if I fell behind in some conquest competition with others... but who the hell was I even competing against? Were there people in other dimensions stuck in the same boat?

Whatever. Putting that aside, honestly? I thought it was a steal. Conquering heroines? Any guy would feel his heart race at that setup, right?

Anyway, the note she handed me read:

No clue what makes someone a heroine. But all three? Family. Mom, big sis, little sis, in order.

Honestly, I didn't see them as family. This was my isekai world, and I'd just dropped into it. They were too damn gorgeous even for my eyes. Saying I never jerked off fantasizing about them? That'd be a lie. But since arriving, I was still adjusting, and screwing up seemed risky, so I'd held back.

The family dressed super conservatively, but stumbling on aggressive lingerie in the laundry basket or bumping into someone at the shower door? I'd belt out the national anthem and lap the neighborhood. "They're family, family," I'd chant to kill the boner. Tough times.

But with the board set like this? No reason not to play.

Over the next few weeks, I cleaned like a maniac, but only snagged four [House Cleaning] coins. No idea what triggered drops. ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Tried experimenting with frequency, but couldn't pin it to simple counts. Screw that—bigger issue: how and where to use these coins?

"Status window?" Nothing. Sigh... Time for a shower and some air.

I left the spotless kitchen and living room behind, tossed my shirt haphazardly, and headed to the bathroom. My reflection? Legendary—in the worst way. This world's beauty standards were sky-high, and my family? Untouchable top tier. Unreal.

Mom looked like an SS-grade porn star fused with a early-20s Western Insta model—impossible to clock as a mom. Sis? Beyond 3D, like she ripped out of an ero manga, pure fantasy sex appeal. Lil sis? Idol face on a Hollywood actress body. Every member was otherworldly hot.

Except me. Isekai didn't reincarnate or possess—just me as is. Relative terms tanked me. Back home, I was average... maybe a solid 5. Here? Generous 7 at best. Fuck.

I crossed the massive bathroom to the shower stall.

—Shoooo...

Cold water cascaded over my head. Real men don't fiddle with temp controls. Lathering shampoo, my face reflected in the shower knob.

...This wash won't scrub off my ugliness. Wahhh. Housework must've fried my brain.

Finished up, toweling off, when that sweet sound hit:

—Ting!

"Ooooh!" How many days had it been?! Logical guess: combos trigger coins. Full house deep clean plus personal hygiene? Log it for the journal. More tests needed, review old logs too.

Grabbed the coin in excitement—and boom, another surprise.

"Whoa, yesss!!" This was life. Threw on clothes and bolted to my room. No time to waste. Locked the door and yelled,

"Status window!" Nada.

"Menu window!"

And bam—menu window materialized before my eyes.

"Ooooh!" Menus cascaded down, but only [Heroine Status Window], [Storage], and [Explanation] were active. Rest grayed out.

Storage first.

Dragged the graphic coins—like treasure chests—into the box icon. Shockingly, the one in my hand and the ones on my desk sucked into the window.

"Aha." Super handy. No more hiding coins awkwardly.

Now, the star: Heroine Status Window. Closed storage, back to menu.

—Beep.

Heroine window popped up, spawning sub-windows. "Whoa." Most grayed; only 'Registered Heroine List' and 'Remove Heroine' active.

Tapped the list:

Exact match to Demon Sis's note—family trio. Add Heroine button existed, but grayed.

Finally, [Explanation]. Jackpot info in the middle:

Aha! Pulled coins from storage, pocketed them. Who first? Happy dilemma—

Knock knock.

"Kangmo Im, come out a sec."

Haena Sis's voice.

"Yeah, coming! One sec!"

Shut menu quick, opened door.

"What's up?"

Silver wavy hair swaying, she stood there holding a lightbulb, cool as ever.

"Light in my room burned out."

Classic deadpan—not "Can you change it?" just "It's ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠out." I knew her style by now. Mild for a request; usually ice queen incarnate.

Normally I'd shrug, but my heart pounded. Like a stallion realizing the stable door swung open—lust for Sis went feral.

Truth? Her icy vibe hid it, but every feature—eyes, nose, mouth, ears, face—was erotic. And that body? Clothes couldn't hide the curves, wavy silver hair framing it all, shampoo scent wafting. Any guy with a pulse wouldn't stay soft.

My crotch raged, but I played cool. "Got it. Changing it now."

Opportunity! Test coin on Sis. Followed her, rolling coins in my pocket.

...

True to her style, her room: simple, tidy. Swapped the bulb.

"Thanks." One word, then the "get out" eyes.

Helper gets the boot? Fair enough for her. Still, "thanks" was progress. Time to spend coins before leaving. Repositioned chair, tapped her arm.

"C'mon, Sis! Nothing for your hardworking lil bro?"

A bit over-the-top for us, but needed contact.

Alert window ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠appeared:

"Huh? What do you want?" Her signature cool tone.

Good— she couldn't see it. No yes/no? Voice maybe?

"Yes."

"What?"

"Uh, Nestea. Haha, been craving iced tea lately."

Like a receipt printing purchases, stat notifications scrolled up. Wow.

"Uh... sure. Next time."

Post-notifs, her cool indifference warmed—just a touch.