Resized to 70% of original (view original)
Artist's commentary
Younger Brother Who Accidentally Saw a Recording of His Big Sis Getting Fucked
A younger brother who was happy for his always tough big sis going on a rare date, but on the other hand was lonely, too, and later on happened to find a recording of his big sis and her date fucking and, although drenched in envy and hate, did not want to recognize that he couldn't hide how aroused he was.
A high res version and textless verison are available on fanbox for my supporters
https://www.pixiv.net/fanbox/creator/5294339/post/958194