>>84235430Vaginas don't have penises so they leak all the time their weird juices. Imagine if you just slimed pre-cum all day.
That's basically a vagina.
Now imagine adding sweat to that slimy precum and having all of that crust onto the inner part of your underwear.
The sloughed off dead cells, the pre-cum, and the sweat all forming a paste of concentrated flavor.
That's Shiori, only losing to Ina in potency.