Kisuke Arita is a 27-year-old male informant employed by Genichirou Miyanomori, head of the Miyanomori family. He operates as an information broker and advisor for the Miyanomori brothers and the family maid, Haru Asagi. Tall with short black hair and distinctive kitsuneme eyes, he typically wears a flat cap, scarf, kimono-style shirt, and black pants.

His personality is friendly and supportive, particularly towards Haru, whom he cheers up and advises during her struggles. He maintains good relations with the Miyanomori brothers, offering them guidance too. He enjoys natto and traveling to different places, considering it a hobby. Conversely, he dislikes cleaning due to the time required and avoids getting dirty. He displays shyness and experiences romantic feelings, developing an affection for Haru.

Kisuke plays a pivotal role in facilitating Haru's entry into the Miyanomori household, having initially encountered her while searching for a new maid alongside Chitomi Egawa. He assists her application, leading to her relocation to Tokyo. Within the narrative, his function extends beyond providing information to occasionally mediating or influencing events involving the family members. In the context of the *Hanayaka Nari, Waga Ichizoku* games, Kisuke is a romanceable character. No concrete information exists regarding his background story, character development, or expanded roles in other official media such as spin-offs or alternate adaptations.