A couple of short stories. The first one was very kinky and followed 2 brothers where the younger was the seme and practiced sounding on his older sibling who was a teacher. Heavy focus on urethra play with stretching and urethra insemination. The second story was about 2 dogs in a pet store. The older dog used toys to initiate his doggie lover. These stories are both a little different and not for everyone.
Ore wa Kawaii Otouto to