After Takuru is taken in by the police, Kurusu wants him to give up the case. But he's noticed something... the sumo stickers that have been placed all around town have something in common with the murder scenes.  He puts up a hidden camera near a wall of sumo stickers that just appeared. But when Kurusu finds out, she leaves in the middle of the night to take it down...
And it's not just us and the police 
who are investigating this.
نحن والشرطة لسنا الوحيدين الذين نتحرّى عن هذا الأمر
Außerdem sind wir und die Polizei nicht
die einzigen, die die Serienmorde verfolgen.
Además, nosotros y la policía
no somos los únicos tras el caso.
Además, la policía y nosotros
no somos los únicos tras el caso.
Et puis, il n’y a pas que nous
et la police sur cette affaire…
E poi non siamo solo noi e la polizia
a seguire questi casi.
E não somos somente nós e 
a polícia nessa investigação.