This is when Kato dropped the bombshell to her daughter, "You know, Mommy is a Kamen Rider." In which her daughter responded... by talking about Demon Slayer. "I really like Nezuko," the daughter says. Kato asserted, "I'm telling you, Mommy used to be Kamen Rider," but she failed as her daughter answered, "You mean you wish you were Kamen Rider?" This deflates her confidence as Kato responds, "No no, that’s not..."
Well. This is the complete opposite when Hiro Mizushima revealed to his daughter that he was Kamen Rider Kabuto.