The Strange House manga volume 3 features story by Uketsu and art by Kyo Ayano.

Yuzuki is not who she claimed to be. I now know that her sister lived in the Tokyo house, but this murder mystery is far from solved. In fact, it's only getting stranger and more disturbing. After Yuzuki tells Kurihara and me about the tragedy that occurred just a week before her sister's disappearance, I realize there's only one path forward - we must visit the house where her cousin was murdered.