eternal amateur

I agree. Saeki definitely is aware that Tokai has that x-ray and that he is looking into something beyond the value of the Black Pean itself. Which is why, as what I mentioned on my first comment, my thought is that there's a possibility that Tokai's dad owned the Black Pean before Saeki and there was an accident/he was framed for the accident causing that x-ray result itself, given that the doctor in charge of that patient was Tokai's Dad. This resonates with Saeki's constant statement on "There is only one person who can own the Black Pean" IF that pean on the x-ray is indeed the Black Pean.

But well, we know too little to take a conclusion on anything yet~ I guess we'll know more next ep~