Takamatsu Hitomi
Youko and Harumi have been friends since youth as their life circumstances were similar. Youko ends up marrying a politician and publishes a successful picture book basen on Harumi's life, when her son suddenly gets abducted.
Takanari Misaki
After the events of the series, Shibata has lost her memories and is reassigned. Meanwhile, a strange case regarding a cursed tree that kills whoever's name is written on its trunk surfaces among mysterious deaths. Following different leads, Shibata and the Unsolved Cases unit will meet again as they investigate. Asakura, it seems, is also plotting behind the scenes...