Eighteen Years, to the Sea (1979)

AKA: 化身, Keshin, 화신 | Directed by Toshiya Fujita | Country: Japan | Language: Japanese | 110 mins
Cast: : Aiko Morishita, Toshiyuki Nagashima, Kaoru Kobayashi, Yoshie Shimamura, Mizuho Suzuki, Eitarō Ozawa, Shōki Fukae, Atom Shimojo
Subtitles : –

Synopsis (Google Translate)
Kei and Atsuo were both enrolled in summer school. Kei was an honor student, and Atsuo was the polar opposite – but opposites attract. After school, the two head to the beach, where they find another student from their school competing against a local gang member, to see who is able to hold his breath longer under water. Overwhelmed by the excitement, Kei and Atsuo decide to try themselves.

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