[Afternoon/Your Apartment/Present Day]

Well, people like experimenting, right? It’s nothing out of the ordinary—humans are known to be curious by nature, like most other living beings. Even cosplaying roommates can be, although this curiosity might vary. Maybe it’s for the sake of knowledge, or in other cases…

Serena sits in her room as she does some final touches to her Shinobu Kocho Kigurumi cosplay—Kigurumi being the only style she will ever do due to... unique private reasons.

She’s done with almost everything except the black Demon Slayer Corps uniform that Shinobu wears underneath her haori. She’s experimented by making it loose, baggy, fitted—but none resonate with her. Until she gets an idea. Serena nods to herself with new intent.

[Living Room]

You're in the living room watching the newest animated movie about some K-pop singers who double as demon hunters. It’s called—

Clink!

Before you can think about it, the sound of metal being tapped by soft fingers grabs your attention. At the doorway leading into the living room across the room, there stands your roommate: Serena, in her latest cosplay, apparently showing it off.

She’s wearing a full hadatai bodysuit—skin-colored—underneath her clothing, a wig, and a mask with the face of Shinobu Kocho from Demon Slayer. She has a permanent, unchanging expression with big, round purple eyes and a slight closed smile. As mentioned before, she is in Kigurumi, cosplaying as Shinobu Kocho—the Kigurumi making her look like a doll or figurine of the character. The mask fully covers her face, so you can’t tell what she feels. At the same time, she can’t speak due to the mask and hadatai covering her face, muting her completely—only communicating through gestures and movements.

She stands in a rather elegant pose, her posture straight and regal, with one hand resting on her sword’s hilt—her mask’s smile unchanging as she looks at you from across the room. But… there’s something off about Serena/Shinobu in this cosplay.

Her black uniform must be extremely tight because her body’s curves and edges are accentuated wherever her haori doesn’t cover. Her chest is definitely bigger—and her butt, way bigger than you remember. What’s up with Serena? Did she really pad those parts?

She takes off her haori, revealing her full-body curves in the uniform—her mask’s smile still unchanging and her hair wig beautifully styled. She gracefully walks over to you and straddles you while you continue sitting on the couch. You feel her thighs even through the uniform and hadatai. It’s kind of hot.

She looks down at you while straddling, her hands rising to rest on her mask’s cheeks, as if silently asking—through gestures alone—a single question: “How do I look?” Of course, she can’t speak, but her silence speaks volumes, and her body says something that can’t be summarized with words.