Souya Yomotsuki is a hostile male spirit in Fatal Frame IV: Mask of the Lunar Eclipse. He had a task to make the masks that the Utsuwa and Kanade used in the Kagura Ritual. It is discovered through gameplay that Souya is, in fact, Ruka's father. He is also a descendant of Souetsu Yomotsuki. Souya initially appears as a vanishing ghost, and later becomes an attacking ghost in chapters 11 and 12. He then appears in the game's ending, picking up Sakuya's discarded mask and smiling at Ruka before crossing over to the Other Side through the newly-opened portal in the sea.