Red Suspicion (1975)
Original title: 赤い疑惑
Red Suspicion is a 1975 Japanese-language drama series. It stars Momoe Yamaguchi, Tomokazu Miura and Hiroyuki Nagato.
Sachiko is the 17-year old daughter of radiotherapist Professor Oshima. After exposure to radiation in the hospital, she develops leukemia. As if that was not enough trouble for one lifetime, discovers that Oshima is not her real father, and that her boyfriend is really her half brother.