This is a detective drama featuring Shinichi, the physically "fit" older brother with a lax and unreliable personality, and his younger sister Kyoko, a kindergarten teacher who specializes in karate.
Data: TMDB (this product uses the TMDB API but is not endorsed or certified by TMDB), Wikidata.
Yoko Oginome
Tohru Watanabe
Ryo Amamiya
Ayako Sawada
Wakako Shimazaki
Miyuki Kosaka