Three Sisters Detective Squad
San Shimai Tantei Dan
Role: Arita Yuuichi (有田勇一)
Director: Ohira Futoshi, Yoshino Hiroshi, Naganuma Makoto, Koga Michiaki
Writer: Akagawa Jiro (novel), Hashimoto Izo, Tsuda Mayumi, Natusno Suika
Wiki - 三姉妹探偵団
Three sisters, all otherwise typical junior, high school student and college students, who, while probing into the murder case of their father, get themselves in the middle of other cases and wind up becoming detectives themselves.
Aired 10 January - 21 March 1998 (10 Episodes - NTV).
Tatsuya appears in episodes 07 and 08.