I've loved you for 25 years.

Sota Yukimura (Hokuto Matsumura), who works in the secondary brand division of the cosmetics company "Nose Cosmetics," uncovers the true culprit behind the murder of Kyoko—the biological mother of Mariko Nose (Sae Okazaki), the woman he has secretly loved for 25 years. The person who killed Kyoko and staged it to look like a suicide was Taisuke Sakura (Tetsuji Tamayama), a First Investigation Division detective who was just 18 at the time...! Upon realizing the truth, Sota attempts to protect Mariko from danger... Meanwhile, Mariko is shaken after her father, Ginjiro Nose (Ken Ishiguro), reveals a "secret" regarding her stepmother, Sayuri (Miki Mizuno)—a secret he had kept hidden for 25 years... Just then, Mariko receives a message from Taisuke! Taisuke has developed a twisted obsession with Mariko, who bears a striking resemblance to Kyoko. Unaware of this, Mariko answers his summons and heads to his atelier... Can Sota save Mariko from this desperate situation...!? "My twenty-five-year love... is over..." What will become of Sota's unwavering, long-held love? The fateful final episode where every secret is revealed!!