When a number of female murder victims are discovered in Ueno Park with lilac flowers in their mouths and one of Shizuru's books by their side, rumor spreads that he may have some involvement in the case. Worried for her friend, Tsugumi learns that the murders seem to be inspired by a certain book where both Shizuru and Sasagoi-san have ties to the author. When Shizuru is taken away by the police for questioning, Tsugumi works with the rest of Fukurou to find the real killer before it's too late.
I realized the world I saw was so... narrow.
.شعرتُ وكأنّ العالم الذي رأيته كان ضيّقًا جدًّا بطريقةٍ ما
Mir wurde klar, dass die Welt,
wie ich sie bisher sah, klein war.
Me di cuenta que el mundo
que conocía era muy pequeño.
Me di cuenta de que el mundo
que conocía era muy pequeño.
que ma vision du monde
était plutôt restreinte.
Ho capito che quello che conoscevo 
era solo una piccola parte del mondo.
O mundo que eu via antes
começou a parecer pequeno.
Поняла, что мой мир был слишком узким.