So am I the only one being surprised about Migiīs lack of reaction to Shinichi revealing its secret to Kana? All it took was a "she wonīt tell anybody" and thatīs it.

Either Migi changed, like Shinichi changed, too. Or, and thatīs where I currently stand, Migi somehow played a role in Kanaīs death, somehow leading her and the other parasyte into each other.