[Zatyme]

My take take has always been that Tsurugi was putting on an act and was fully in control with none of the worm influencing his actions to ensure that as many worm were killed as possible before committing suicide by Rider and Tendou had a hunch hence his hesitation once the hyper zecter is broken out. but at the same time Tendou can't be absolutely sure this is the case is prepared to kill him. With my assumption being that considering something he does later on and his protection of Hiyori if Tsurugi was willing to continue living as a human he would try ensure it happened, but when it became clear he wasn't willing to live as a worm beyond this he reluctantly did the deed that was his worst case scenario. Especially considering we have no clue in his attempts to provoke Tendou into killing him if he would of attacked Misaki.


Regarding Kagami I always felt that he was attempting to save face while being unable to articulate the actual reasons why he never told anyone, as if he was able to articulate them he would of brought it up.