"Why...?" At the scene of a serial murder case, Mankin (Kishii Yukino) witnesses Kouki (Shison Jun) standing in front of a woman who has been stabbed all over her body...! Leaving Mankin behind as she aims her camera with trembling hands, Kouki flees. The police put out a nationwide wanted list. Amid a flood of criticism of Mankin for letting the culprit slip away, Kouki, who is on the run, publishes a memoir online, confessing to his crime! Is it true when he says he is the culprit, or...?! Kouki's past is revealed... and finally, the day of the "final murder" arrives!!
Two journalists fall in love while investigating a serial murder case, but as secrets unfold, she must decide if she can trust him or if he's the killer she’s searching for.
