Parrot Sang with Her Own Body (1981)

She did not hear. She did not sing. But she loved!

The widower Choi is impotent. He adopts the infants Mun and Su-ryun and raises them. Mun graduates from college in Seoul but he can’t adjust to Seoul life so he returns to Choi’s home. Mun learns that Su-ryun is not his sister in blood and he falls in love with her.