Oshikiri lives a lonely existence within his large, isolated house, harboring a distinct fascination with the supernatural. This residence contains an active interdimensional portal, a gateway to parallel realities inhabited by alternate versions of himself and others. Troubled by unexplained footsteps echoing through the empty house, Oshikiri asks classmates to investigate. During their visit, they make a terrifying discovery: an alternate, violent Oshikiri from another dimension, caught in the act of murdering and burying the body of one of their own counterparts. This murderous doppelgänger presents a stark contrast to the primary Oshikiri's nature. The story confronts the psychological and physical consequences of meeting this malevolent alternate self, though Oshikiri's ultimate fate remains uncertain. The persistent, unresolved dimensional instability within his home continues to define his unsettling reality.