After being taken into custody by Makima, one of the Public Safety Devil Hunters, Denji finds himself head over heels in love with her thanks to her suggestive insinuations. 

Wishing to team up with Makima, Denji arrives at the Devil Hunters Headquarters in Tokyo, and gets introduced to Aki Hayakawa, a senior hunter that he was supposed to partner with. But then Hayakawa beats Denji up, and demands that he “quit this job”...
That'll help me figure out 
if you're of any use.
سيُساعدني هذا في معرِفة ما إن كنتَ نافعاً
Danach entscheide ich,
ob du zu gebrauchen bist.
Así juzgaré si nos servirás de algo
o no.
Así dilucidaré si vales para algo o no.
Je verrai si tu seras utile ou pas.
Così stabilirò se ci sarai utile o no.
Para me ajudar a entender se você é útil.
Ну а я уже решу,
будет с тебя толк или нет.