[Theory] Conan 1151 last scene

This man is related to suzoki family, no related to black organization by any means

Some evidences

(1) RUM revealed after 8 years of announcement, and would take so much time before being resolved and reveal anything new (we still have at least 2 major mini arcs; hanida koji case revealing RUM/Rumi/koroda history, and the main conflict in the current timeline. I think that would take a lot of time, so no need to make a big reveal now, specially that RUM revealed not so long ago

(2) This mysterious man appeared suddenly in an episode that is not related to black organizaiton. He appeared in an episode related to kaito kid, suzoki group

(3) I assume that; this man is part of suzoki family that hate jirokichi suzoki (sonoko's uncle) and want to destroy him, so he is hiring kaito kid go steal the company to destroy it.

That makes much more sense that he is angry from conan ruining kaito kid steal everytime

(4) look to the 2 picturs of the black mysterious man and jirokichi suzoki, both of them have similar moustache and similar eye lashes.