Swire: Hey. Where are you going? Ch'en: I am sending this stuff back to it's owner. *Lurking* Sendai: ............they will probably lead me to Gamby...
It’s a strange alternate world where one of their own is MIA. Adding to this is the fact that the tracker has been separated from Gamby, and is in the possession of an unknown contact.
To be fair, its highly doubtful that Sendai can even face Ch'en head-on. There's also Projekt Red who switches on hunter mode and moves the same way as Sendai does.
I went back and found the Shigure Assassin series where we first met the man who is now Rhodes Island’s Doctor. And I must say, Sendai is going to be surprised to see him again.