Aslong as one has senses, and chakra, they can be placed in Genjutsu.
Genjutsu requires the user to send chakra into the opponent, where the chakra distorts the victim's chakra flow before flowing to their brain and altering their senses to see, hear, smell, taste, or feel whatever the user wants them to.
Kakuzu sees things, hears things, and has chakra. Thus, his senses can still be distorted the normal way. If he had no chakra, then you'd have a point. But he does, and thus, he's screwed. Due to this, Sasori should be just as screwed. His chakra core can be distorted just as easily. Or should, aslong as he has senses like a human. And he does... so yeah. Unless it's actually stated somewhere that he's immune to Genjutsu then that's GG.
/thread
Genjutsu requires the user to send chakra into the opponent, where the chakra distorts the victim's chakra flow before flowing to their brain and altering their senses to see, hear, smell, taste, or feel whatever the user wants them to.
Kakuzu sees things, hears things, and has chakra. Thus, his senses can still be distorted the normal way. If he had no chakra, then you'd have a point. But he does, and thus, he's screwed. Due to this, Sasori should be just as screwed. His chakra core can be distorted just as easily. Or should, aslong as he has senses like a human. And he does... so yeah. Unless it's actually stated somewhere that he's immune to Genjutsu then that's GG.
/thread