Complex sentence: In 1969 she appeared in one of the "Nihon Zankyoden" series of films directed by Masahiro Makino who recognized her acting ability and gave her the stage name of Meiko Kaji.
Split into simpler sentences: In 1969 she appeared in "Nihon Zankyoden", one of a series of films directed by Masahiro Makino. He recognized her acting ability and gave her the stage name of Meiko Kaji.