Responses
Also in ch 4 when he and Shirou were talking and Shirou made a flustered/panicked face, Inuzuka muttered to himself "As I thought they look similar". And if we're to go on from that, we already know who he's referring to.
(≧∀≦)
Inuzuka asking if Shirou has brothers is just me really
I mean yeah give their number and LET'S FREAKING GO ON A DOUBLE DATE (づ￣ ³￣)づ