Kalyanaraman in Japan) is a 1985 Indian Tamil-language romantic comedy film directed by S. P. Muthuraman, starring Kamal Haasan and Radha .

Raman is a journalist who exposes a smuggling and black money racket, which involves the high-profile and his son Narendran, and is about to go public.

In the comedy side plot, Mayilsamy and Muppaathaa win a lucky draw to visit Japan, guided by Munusamy.

Raman meets Radha, who is a waitress in a restaurant, and they gradually fall in love, with the efforts of Kalyanaraman and Arun.

The movie ends with Raman helping to arrest Narendran and getting back together with Radha and Arun.