Mantis’ assumptions were correct. Kazumi was naturally curious. Minoru brought her closer, and it took only the slightest of nudges for her to crawl from one body to the other.

There was indeed a connection there - similar but not exactly like how Minoru and Kazumi talked during those few hours at the Halloween party. Minoru, dressed as a Slytherin student (Isamu was a Ravenclaw), had gained parseltongue as part of the transformation. Unfortunately, a bit of angel booze made the night one giant blur for Minoru, that part included.

[please, feel free to actually read her. Permission granted to assume what the snake might be thinking.]