Furin ganbô: Iyasaretai (2000)

Yamano, a salaryman, is diagnosed with cancer—a revelation that sparks an argument with his wife, Ikuko. During the altercation, he accidentally shoves her; she hits her head and loses consciousness. Terrified, Yamano flees the scene. When Ikuko later regains consciousness, she has lost her memory. Meanwhile, Rina—a former idol whose popularity is waning—is being pressured by her manager, Egawa, to appear in adult videos. At a shoot, she encounters Misuzu, an idol she has long admired; after Misuzu gives her a stern pep talk, Rina runs away from the set. She ends up in a park, where she meets Yamano, who is sitting there in despair. The two share their respective troubles and eventually fall in love.