If a female relative comes to live with us...

Stalking a girl relative
A girl relative a little older than me.
She's going to take the entrance exam for a high school in the city, so she's going to a cram school and studying there, and so she's living in my house in the city until the exam.
When we were little, we used to go to each other's houses to play, but when we got older, we didn't see each other because we were of the opposite sex...

We're both of a certain age, so we're both conscious of the opposite sex, and our cohabitation is awkward.
We've been living together under the same roof, but her breasts are just starting to swell. Her bottom has grown soft.
Recently, she's gotten used to this house, and she's showing off her panties in defenseless poses, and wandering around naked after a bath...
I'm in the middle of puberty, and her sexuality makes my heart race.

She's concentrating on her studies and is always on her guard.
No enemies appear and we don't fight.
No adventures or treasure hunts.
We spend our normal daily lives, and there's only one girl, a relative who is much younger than me, who lives with us.

When I go through the living room to run some errands, she's lying on the sofa, her skirt flipped up, memorizing English words.
She's so focused on her studies that she regularly slips and falls down the stairs.
She's holding her bottom in pain, and her panties are completely exposed...
She must be tackling a very difficult problem, as she's holding her head in worry, and her lower body is showing with one knee raised.
Wherever you go in the house, wherever you do whatever you do, you'll find your relative's young girl's panties!! (sweat)

Secret footage of a teenage girl.
She certainly seems to be growing as her breasts begin to swell.
Let's use a hidden camera to peek into her deep secrets that she never shows to anyone!
In the dressing room, she shows off her budding breasts without hesitation.
Not only in the bathroom, but also in the room, cameras can be seen of her as she awakens to her sexual desire...
Every night, masturbate while watching her lewd behavior!!

[Collect various things]
Manage her physical condition as well!
- Menstrual cycle (dangerous days for horniness)
- Number of masturbation sessions
- Masturbation content
- Time until climax from masturbation
- Number of times she uses the toilet (number of times she pees and poops)
- Condition of her underwear before washing (record of dirtiness)

[Nighttime sex is OK]
Even so, her body is still growing, so it's too stimulating!
Get ready to attack without anyone finding out!
I recommend putting her in a coma and sexing her at night!
On nights when her parents get home late, give her alcohol or sleeping pills so that no one finds out...
After getting her to sleep soundly...
Take off her pajamas and admire her naked body. Just release it on her sleeping face!
Of course, have lots of fun until you get her pregnant!!
If they're relatives, marriage and pregnancy are OK!