Sassy Stepsister and 10 Days of Secrets

Bob, an average horny dude, was having some strange dreams. He's able to hypnotize any girl and make them obey his orders. Even knowing it's a dream, and knowing these girls are all of legal age, Bob won't dare to even touch them, he's a coward.
So yeah, this game is Bob's dream, and you'll play as him.
Don't let your hornyness distract you, this game requires patience and self-control. You may want to look at the sexy stuff thru the snake but that, my friend, may be a huge mistake!

Four days of secrets and transgression spent with a girl hiding her exhibitionist tendencies—
The protagonist repeatedly sees a certain girl in the park.
After accidentally finding her student ID, he gradually begins to delve into her secrets.
An encounter in the women’s restroom, secretly following her, and then to her room—
As the days go by, their relationship changes, and her hidden exhibitionist desires are gradually revealed.
This is a 3D adult game where you can enjoy a compelling story and highly customizable H-scenes.

Alone With My Step-Sister is an 18+ sandbox visual novel where every room in your empty house is a playground for teasing, chores, and steadily hotter dares.
Your parents are gone for two weeks; you and your razor-tongued, 21-year-old step-sister are left to “keep things tidy.” Between breakfast dishes and late-night movies, the tension climbs from playful shoves to bedroom invitations – all driven by a single Lewd Level that tracks how bold she’s willing to get.
Master the daily sandbox loop – Morning, Afternoon, Evening, Night – deciding where to go and what to do:
Chores & Money: wash dishes, fold laundry, fix the Wi-Fi and earn allowance for gifts.
Random Events: walk in on her stretching, showering, napping on the couch – react or peek and accept the consequences.
Risk-&-Reward Choices: push too hard and trust drops; play it smooth and her Lewd Level rises from 0 (hands off) to 5 (anything goes).
Level-Up Quests: four milestone scenes—cook-together mishap, wine-fueled dares, movie-night lap ride, bedroom phone confession—each unlocking new actions and positions.
Free-Roam H-Scenes: once she hits Lv 5, choose from 10 unique positions (missionary, standing shower, spooning, cowgirl, etc.) plus special endings for every random encounter.
Gallery & Achievements: replay every CG, listen to every moan, and hunt Steam achievements for perfection.
Fast banter, branching reactions, and a dynamic suspicion meter keep every visit fresh: keep things quiet or risk a “how’s it going?” call from Mom that locks you out of fun for a day.
Can you juggle chores, keep the house from imploding, and still coax your step-sister into the wildest vacation of her life?
Find out when the parents leave—and nothing’s off-limits but the neighbors’ ears.

The girl’s actions change based on her mood, and you can move around freely and interact with her.
Depending on your actions, her affection and attitude toward you will also change.
Whether you tease her by getting in her way or treat her kindly to build a loving relationship — it’s all up to you!

The protagonist gains a new stepsister after their parents remarry.Leaving the two behind, the parents go on their honeymoon.
Seeing this as an opportunity, the protagonist—who loves “little sister” stories—wants to somehow build a good relationship with his new stepsister.However, she has a strong personality and is openly defiant toward him.
But now, the two of them are alone in the house… and as long as he can keep things under control, nothing will be a problem.The protagonist resolves to do whatever it takes to form an intimate relationship with her—whether that ends up being as lovers… or something far worse.