Aoba, who lives a pretty ordinary life, works at the junk shop "Mediocrity." The manager asks him to make a delivery one day, but he finds out that there's nothing at the address he was supposed to deliver it to. It was then that Aoba was consumed by light and he was within a mysterious world.
So, for the S-type custom parts 
you were just asking about...
..."بالنسبة للقطع المعدّة خصيصا من نوع "س
Also was diese Sonderanfertigungen
 der S-Reihe angeht …
Con respecto a las partes de 
tipo S por las que preguntó,
Con respecto a las piezas de 
tipo S por las que preguntó,
Concernant la pièce détachée…
Então, as peças tipo S personalizadas 
de que você estava falando