I Can't Handle My Former Bookworm Little Sister Now That She's a Slut! 2

Well, we've crossed the line of brother & sister.
I swear not to let this happen again, however, my little sister still insists on tempting me.

This is the sequel to "I Can't Handle My Former Bookworm Little Sister Now That She's a Slut! (RJ332193)",
but the story is enjoyable on its own.

[Story]
She used to be such a plain girl, but now she's so hot and sexy,
and plays around with men she meets online. Of course I would get ideas of my own...
And that's exactly what happened. I laid my hands on her, we went over the line, and there is no going back.
I try my hardest not to repeat my mistake, but suddenly our parents head off on vacation,
leaving the two of us to ourselves!?

[Author]

Yu Ichinomiya (Twitter:@yu_ichinomiya)