Resized to 94% of original (view original)
Artist's commentary
Because My Childhood Friend got soaked in the Rain
I've lended my t-shirt to her!
Childhood friend: "Sorry, I've also borrowed your underwear."
It's that kind of story
For more on Ci-en (part of it is available for everyone)
https://ci-en.dlsite.com/creator/4565/article/637163