Career
Katori was also once well known for cross-dressing as the character Shingo Mama (慎吾ママ) on the variety show Sata Suma. He even released a top-selling Civil Defense single "Shingo Mama no Oha Rock" (慎吾ママのおはロック), done in character. Shingo Mama"s trademark phrase was "Ohhā!" (morning!).
From 2000-2001, Shingo Mama promoted the use of Ohha as part of a Ministry of Education campaign to encourage family communication.