SNOS-327 · I Want to Dive Into My Pure Stepsister's Careless Panty Flash - Nanoka Hatsumi

This year's New Year's holiday is just me and my stepsister.
Even though she's my stepsister, we've lived together for years.
When we're alone, I'm told to help her study for her important upcoming exams, but...
I... well... no... how should I put it...
Well... if I say this... as an older brother... my... dignity will disappear...
No, Nanoka is just so cute...
Eventually... she might bring home a boyfriend... well... when that happens, I'll welcome him as a proper older brother... yeah...
That's how it should be... but... still... it's like a male instinct... even my friends seem interested in Nanoka...
I mean... please don't leave me alone with Nanoka... I can't take it anymore... Nanoka, sorry, I'm not your brother, I'm a man.
The panties visible between her thighs!!!!!
The excited stepbrother suddenly goes wild over the panty flash.
Innocent Nanoka cannot hide her confusion.
What happened to the brother who was supposed to be kind...
Unconscious panty flashes peeking from the depths of her skirt.
Panty flashes visible from below when she stretches slightly.
Panty flashes appearing from between her legs spread boldly during a game.
Panty flashes seen through the gap of the sleeping beauty, Honoka.
Colored panties visible under her open skirt while sitting.
Nanoka-chan's panty flashes seen from every angle.
Heart-pounding sex between innocent Nanoka and her troubled brother, starting from her panties.
It's all the panty flashes' fault... it must be.