An invisible Willwear is causing massive damage in random attacks across Tokyo.  Unit 8 tracks the Willwear down to the quagmire zone, a hotbed of illegal immigrant activity.  The area is a lawless zone, so Sena is sent to infiltrate as a civilian garbage collector.  There, he meets an illegal immigrant from a equatorial nation, who he suspects of being involved in the attacks.  When he strikes up a friendship with the man, however, he's forced to choose between his personal feelings of respect, and his duty.
If I follow you in my free time, 
that's no one's business.
،إن تبعتك في وقت راحتي
.فهذا ليس من شأن أيّ أحد
Mir kann keiner verbieten,
dich freiwillig zu begleiten.
Seguirte en mi tiempo libre
no es problema.
Seguirte en mi tiempo
libre no es problema.
Je peux t’accompagner 
si j’en ai envie.
Se ti seguo nel mio tempo libero,
non ci sono problemi.
Se eu te sigo no meu tempo livre, 
ninguém tem nada a ver com isso.