Kyōsuke Hikami serves as Ichigo's biological father, emerging exclusively during her journey into the past timeline. Within this era, Ichigo assumes the identity of his sister to manipulate unfolding events, concentrating her efforts on fostering a romantic bond between Kyōsuke and her mother, Miyuki. This mission arises from Ichigo's determination to alter her family's future by securing her parents' marriage, rendering Kyōsuke's interactions with Miyuki pivotal to her endeavors. His documented narrative function revolves entirely around this matchmaking context, with no elaboration on his personality, physical traits, occupation, or actions beyond this role. His life outside these efforts, awareness of Ichigo's true identity or objectives, and eventual fate remain undefined, alongside his background, character development, or portrayals in other media.