Kenji is the Earth father of protagonist Usagi Tsukino (Sailor Moon). Kenji, like his wife Ikuko, is totally clueless about Usagi's real identity. A stereotypical well-meaning Japanese salaryman, he works as a magazine reporter and later as an editor-in-chief. Kenji is quite affectionate with his wife. Early on, he becomes very upset when he sees Usagi with Mamoru Chiba,
In the manga it can be noted that Kenji is the one member of his family who notices the similarities between Sailor Moon and Usagi. He senses a maturity in his daughter that comes when she is finally aware of her status as Princess Serenity, and notes that at times her beauty seems serene.