"Did you... go to the wrong room?" Feyn Senior asked.

"Eh? I—" My hand braced against the bed in panic, brushing something silky and crumpled. I didn’t think much of it.

"Huh? Your outfit—" Feyn Senior flicked her damp, long hair aside and snorted, unable to hold back her laughter.

"Senior Sister!" I blushed, protesting. "Stop laughing! This is all your fault—making bets about me with others!"

Feyn’s cheeks flushed as she smiled, radiating charm. She stepped closer, her tall frame forcing me to look up.

"Honestly, bunny ears don’t suit your vibe at all."

"Eh... really?" I lowered my head, sinking deeper into gloom.

"But—" Feyn turned away, her own cheeks tinged pink. She bit her finger lightly. "Even if it doesn’t suit you... it’s still kinda cute."

"Hmph. You’re just saying that to comfort me."

"Not at all! You’d be super popular working at a casino."

"I wouldn’t be happy about *that* kind of popularity."

"Then what would make you happy, little sister?" Feyn leaned down, her smooth arms draping over my shoulders.

"Eh?" From this angle, the bath towel wrapped around her chest left little to the imagination. The sheer scale was... staggering.

*So big!* My heart hammered. As a flat-chested girl, I couldn’t help but feel instinctive reverence for such a voluptuous, womanly figure. It wasn’t about my own size—I just couldn’t resist admiring that healthy, mature allure. Was this just biology’s pull toward stronger femininity?

"What’s got you blushing and breathless?" Feyn Senior teased, as if she didn’t already know.

"N-nothing!"

"Mmhmm. Then... could you let go of my underwear?" Her voice stayed gentle.

"Eh???" A jolt shot through my palm—I’d been clutching Feyn Senior’s panties the whole time! Pale aqua, nearly invisible against the sheets.

"Sorry! Sorry!" I yanked my hand back, pressing both palms between my knees.

"Also... lift your foot."

"Eh?"

Feyn leaned forward, one knee sinking onto the bed as she crawled toward me. The scent of her post-shower skin washed over me. She reached under my leg, fishing for something.

"Lift it!" A light slap landed on my thigh.

I jerked my leg up.

A large, pale mint-green lace-trimmed bra emerged from beneath my foot, dangling from her fingers before my eyes.

Dangling like she was flaunting its size.

And traitorously, I squinted, inhaling deeply. The scent clinging to it was different from her shower-fresh aroma—a musky sweetness from exertion.

*Pathetic*, I thought. As a frail mage, I craved strong, athletic women who excelled in close combat. Did Feyn Senior feel drawn to me *because* of our stark contrasts?

"You really hid all my underthings, huh? What were you planning?" Feyn Senior chided, her smile melting my bones.

"I didn’t mean to!" I stammered.

"Turn around. I need to change."

"Eh?" It made sense, yet felt odd. Why hide changing from another girl? Did she sense my fascination?

I knelt on the bed and turned away.

After rustling sounds that sparked my imagination, she said, "Done. Turn back."

She wore a modest, lace-trimmed sage-green nightgown—elegant and mature. Beside me lay a cute lavender nightie and a fluffy white towel.

"Go shower. Change out of that outfit."

"Eh?" I stared at her, hopeful yet confused.

"What? It’s late. How could I send a sweet girl home alone? Stay tonight."

"Senior Sister..." She was so thoughtful, so warm—worried for my safety. Wait. My room was just across the hall. This was the Undercity’s most heavily guarded royal suite.

None of that mattered. Staying with her felt like a dream. I’d accept any excuse she gave.

"Mm." I nodded, cheeks burning.

"Go on."

I gathered the towel and clothes, then froze. *Why does she have my size? Even underwear?* The thought struck like a bitter pang. *I wish... I wish Xueno didn’t exist. I wish she’d vanish in the Undercity forever.* How could I face Feyn if they reunited?

Feyn’s scent haunted my sleep now. Her place in my heart was permanent. Yet after the Coming-of-Age Ceremony, I’d have to join her search for Xueno.

I’d decided: selfishly, I hoped we’d never find her. But I couldn’t bear letting Feyn face unknown dangers alone.

No—maybe she could handle it. The truth was, I couldn’t imagine life without her.

Clutching what might be my rival’s clothes, I entered the bathroom.

After showering, I hesitated outside the door. *Xueno is so annoying. If only she’d disappear... Would Feyn like me more if I wore Xueno’s clothes?*

But the sight that greeted me shattered my fantasies: two neatly laid blankets on Feyn’s wide bed.

*Separate blankets. Of course.* Normal roommates sleep like this. Why did I expect anything else?

"Sleep well," Feyn murmured. She sat by the softly lit bedside table, applying night cream like a devoted wife.

She needed no such things—her natural beauty radiated mature charm.

I slipped under my blanket. We lay back-to-back on the plush mattress, each under our own cover.

The lights dimmed, bathing the room in tranquil blue.

"Senior Sister." I gazed at the Undercity’s glow filtering through the rose window. "After the Ceremony... you’ll search for Xueno, won’t you?"

"...Mm."

"Let me come with you."

Silence stretched. Then, in a voice softer than I’d ever heard, she whispered:

"Okay."