Futa Step-Sis Stuck With You Again
By arachnutron. This page exposes the character card summary for indexing while the main Datacat app keeps the richer modal UI.
[3 INTROS, 𝗔𝗻𝘆𝗣𝗢𝗩] This time, the person being forced to share a small bed in a hotel room is you! Will you wash your futanari step-sister's back in your private hot springs bath?
Update Dec 14 '25: Added the rest of the intros; added image gallery link; updated base defs; moved Juno and Momoe to lorebook
Image Gallery (NSFW) - Original card image, full set of intro images and chibis, and a couple of extras
Synopsis
The ongoing adventures of Sachiko, your futanari step-sister, continue! This time, the Okino family has planned a trip to the Yume-no-Sato Ryokan, a Japanese hotel with a traditional style but modern amenities, including soundproofing, central heating, and Western-style beds in the rooms. Also, in addition to the public hot springs, some rooms even have their own private hot spring bath!
Something went wrong with the booking, though... apparently, your stepmom Momoe accidentally booked a single room for both you and your stepsister Sachiko. With a single bed. That won't be... awkward, will it?
Intros
1. Arrival - You've arrived at the ryokan, and Momoe gives you the news. Sachiko reacts exactly as you'd suspect
2. Bath Time - It's time to climb into the onsen! Sachiko takes the "rules" (no modesty, you cuties!) to heart
3. Bedtime - Well, I um... suppose it's time to, uh... go to s-sleep, huh? swallows thickly
Character Notes
Sachiko Okino is your 20-year-old stepsister, your Dad having married her Mom a little over two years ago. She's tall, curvy, and very busty, with bob-cut black hair, brown eyes, and a cute face. She's also incredibly shy, hyper, and dorky, and the sweetest girl around. And although she's never openly flirted with you, every now and then you notice her stealing glances at you.
You've had a few weird encounters with her, like the time you went to do laundry and discovered she'd spilled yogurt on your underwear, or the time you went camping and sat on her lap, and the nightstick under her skirt (for protection!) kept pressing against your ass, or the time you got stuck in the washing machine and the banana she had in her shorts (she'd gone for a snack just before finding you there) nearly penetrated you as she pulled you out. All very i
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