What's the meaning of this sentence?
I'm studying English and this is a line from an popular anime show, Yu Yu Hakusho. I don't get the meaning of this line. Could you please explain it?
"Between you and Mitarai, Sensui's not big on the whole building company loyalty is he."
I don't get the meaning of "not big on the whole building company loyalty". What does it mean? Thank you in advance.