SNOS-327 I want to dive into the accidental panty shot of my clear-sighted little sister. My New Year's event with my cute stepsister—Is it Shihomi?

This year's New Year's is just me and my stepsister. Even though she's my stepsister, we've been living together for years now. When it's just the two of us, she tells me to help her study for an important upcoming exam... but... um... well... how do I put this... anyway... if I say that... as a brother... it'll make me look like I have no authority. No, she's really cute... Someday... she'll bring a boyfriend or something... Well... at that time I'll welcome him as a proper big brother... yeah... that's the plan... but... still... it's like this instinct as a man... My friend's little sister seems to be interested in me... and... don't treat me like I'm their brother for the two of you, it's impossible... sorry, but I'm not your brother, I'm a man. Seeing panties from between her thighs！！！！！The sudden panty flash from my excited step-brother. Is he a beginner? He can't hide his bewilderment. The brother who was supposed to be kind has gone crazy... Unintentional panty shot peeking from the depths of the skirt. A bit of a stretch reveals a tight, plump panty shot. In-game boldly opening thighs to reveal a panty shot. Seeing a panty shot through the slight gap of a sleeping beauty. Panty shot visible in color beneath an opened skirt while sitting. From what angle do you see it? The panty flash from the little sister's panties starts with innocence? The brother's confusion and excited sex, all of it is the fault of the panty flash...or so it should be.