ずぼし
bull's-eye; the mark
Noun
図星ずぼしですか?
Is that it?
別べつの理由りゆうがあるね?どう?図星ずぼしでしょう?
There's another reason, isn't there? Well, how did I do? I bet I hit the mark.
図星ずぼしです。
That's it.