The Strange House (Manga) Vol. 2

Yes. This is Volume 2 of the manga adaptation of Uketsu's novel, illustrated by Kyo Ayano and serialized in Ichijinsha's Comic Howl since January 2023. It continues the investigation into the Saitama House begun in Volume 1, and is followed by Volume 3.

Yes. The manga, drawn by Kyo Ayano, adapts Uketsu's novel of the same premise (published in English as Strange Houses). The series was also adapted into the live-action film The Floor Plan.