Bran tried to be a fair owner of his older sister Gwen, but she had to learn, she wasn't a human anymore. He told her that she wasn't allowed to use the human bathroom anymore, but she just kept sneaking in when she thought he wouldn't find out. So he put her outside for the night. If she couldn't be properly house trained, she could find out what an outdoor dog had to deal with.

Danaume, HentaiFoundry