秘花 (1971)

A very rare ATG distributed Wakamatsu, starring Ken Yoshizawa and Rie Yokoyama as two pieces of a destructive love-triangle. Has all the usual Wakamatsu themes of politics, suicide and twisted love, as well as stylish Hideo Ito cinematography and great use of the more or less single set (a beach with an abandoned boat on it). As there's not that much dialogue, it could make a fairly 'easy' translation project (hint hint)