Shinjo Masamune (Takumi Saito) discovers security camera footage from the Nanase household. Is his wife, Shiori (Yumi Adachi), on the screen?! Shinjo and Rin Nanase (Yuno Nagao) seek help from their most trustworthy person: Detective Tsukasa Sunouchi (Yosuke Eguchi). Eventually, Rin's memories of the day of the crime and Shinjo's memories from his childhood are revealed... Finally, the outline of the incident that began 30 years ago begins to emerge!? But... they find themselves in a dire situation! Farewell, Masamune -- the pseudo-parent-child duo is parting ways...?! A tear-jerking development awaits just before the final episode!