[Kirayuki]

Originally Posted by Aspirety

@Kirayuki, Kashima sent him? Where's the evidence of that? When Kashima sent a familiar to investigate the world, that familiar was surprised by Kotarou's presence. That to me is critical evidence against that theory.

It is not theory, It was already stated plain clear in the game by Kotarou itself, I think you are missing some lines here. You should try read again starting from the part where there was one familiar trying to attack Kagari until the part where Kotarou talk to himself in the forest.

Spoiler for Answer:

That and you should note that Kotarou suddenly let the familiar went past him unconsciously, he concluded that somehow his body purposely allow Kagari to be almost killed.

It's because his existence was still tied to Kashima Sakura's order, which is why he tried to cut that connection and resulting in unable to re-materialize again after dying.