Dean nods his head in reaction to Rebekah's answer. She understood Genjutsu quite well for someone who doesn't have any knowledge in the field yet. Dean remembered how bad he was at Genjutsu, an utter disgrace. Luckily, very few people would remember this, as Dean had now made a name for himself, concerning Genjutsu that is. Dean smiled, as he cleared his voice in an attempt to talk."
"Indeed, Genjutsu usually changes the natural to become a bit..odd. Something that isn't very logical at times, like snakes emerging from the ground but no indication of a summoning smoke or seal, or even the fact that heat can't be felt from a fireball conjured up with a Genjutsu. Some Genjutsu go even further, as to make it more difficult to figure out. One might encounter a foe who uses Force based powers, but also has a Genjutsu where he is able to manipulate it. How would one tell the difference? The environment is usually a good tell, feeling the Wind, taking the environment into account. However, once more, Genjutsu is a sly art. Some Genjutsu focus on making changes to the environment for that exact reason. Luckily, these are easily noticeable if you are paying attention. Be sure to always deduce a Genjutsu before even trying to break it, we'll practice this a bit later with some of my personal Genjutsu. Nonetheless, being a sensor also helps one deduce that something is wrong by noticing the disruption in the chakra flow, or if you are lucky enough to have that accursed Sharingan, it can see the chakra flow, so that makes it a bit easier. In your case though, you''ll rely on your wits and smart reasoning. Now.."
Dean says, as he points towards Rebekah.
"Say I place you in a Genjutsu right now, how would you break it? You now know how to know if its a Genjutsu, but how would you get rid of it?