I bend my fingers into an 'L' shape and gently rub inside Luna's pussy.
"Ah, ahh… Huhuh…"
Luna wiggles her bottom gently in pleasure.
I press down on my little sister's pelvis from above and persistently rub the spot I've targeted.
Squelch, squelch, squelch, squelch!
"Ah… Ahh… Big brother… Hah… I did wrong, I did wrong… I'm sorry for being naughty… Sorryyy…"
At this moment, after I watch Luna getting cocky while pleasuring me with her mouth and hands, it feels like I'm properly putting her in her place.
Showing her that I'm the one in charge.
Without stopping, I scoldingly stir Luna's pussy.
Squelch, squelch, squelch, squelch.
"Yes! Ah… Ah… I like it… Your thick fingers… Ah… Ah… It feels good…"
"Do you like reaching the climax in my arms?"