Aaah...that doctor is dangerous indeed. I'm still hoping that he's not purely evil but I guess it wouldn't be like that...
Also Sengoku seems to have no choice
I wonder what doctor is planning..
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Update till ch 117 : I guess from what we've seen the pyramid is another research building or something. That ancient animals sign on the wall might means something that we don't understand yet. Also, I don't think Yarai can do much with someone like that doctor >_>; Not to mention that the reason why he would come to that place is to save the teacher which gives him a disadvantage