[Story]

I have a younger step-sister, to be exact, she is a step-sister-in-law.
She doesn't have a boyfriend and I am cherry boy, of course.
However I began to notice my step-sister as the opposite sex.

Every time she calls me "Oni-chan!(big step-bro!)", I'm fascinated by this.
This situation is very common in the movie world as the "forbidden love"
But the abnormal thing is I have the size fetish! I love the Giantess!

I have spent a large amount of time to invite Small-flashlight to have a fun with my Giant younger step-sis.
Then, the Small-fl... Show more