A conversation between Uramichi and Edei leads Usahara and Kumatani to recall their college days where they shared a dorm room with Uramichi.
That might be why he 
came along to go shopping.
ربما لذلك رافقني للتسوق
und mich deswegen
beim Einkaufen begleitet hat.
après ses vacances en solitaire.