Night Crawling Is Bad!?

The leading character is a virgin, reserved, “otaku”. His work is home security.
By strange accident, his father remarried and he got a new family.
…My sister-in-law looks at me really coldly.
However, I am panting and suffering with mental anguish over the sister-in-law in my new family.
I couldn’t stand it anymore so I decided to do night-crawling on __/__/20__.
If I am found out she will look at me even more harshly, and treat me as sheer waste.
I need to have sex with her without being found out.

** Hiyori Tachibana B70/W52/H76 Small-titted virgin
My sister-in-law always berates me, saying “you are disgusting! Dirty!
Her tone is harsh, but at least she calls me “bro”.
*”Huh!! Bro you are disgusting!” (C.V White night AK)​

Click the girl with the mouse and fiddle with ther.
You must not wake her up.
There is licking, rubbing, plucking and insertion etc.
If you take part in touching actions, your parameters will increase.

If you let off your lust all at once, you will definitely wake her
You need to touch her gently and slowly without giving in to lust, and succeed in your night crawling.

Make your sister-in-law wet, make her feel it, and make sweet love.