Sensuikan ni Koi wo Shita Kujira no Hanashi(1989)

Sensuikan ni Koi wo Shita Kujira no Hanashi

Dekao, a lonely whale, was swimming dejectedly in the ocean, desperately wanting a partner, when he met a very beautiful whale right in front of him. However, the whale that Dekao fell in love with was actually a submarine built by the Japanese Navy...