Who are you and what do you want? Did this clown put you up to something? She points her wing at Barney who started dusting off his clothes and fixing his hair. Hey hey hey, I didn't put him up to anything. He's the new signer and you better obey him or... Aoi suddenly pierced through Barney with her look and intercepted his sentence. Or what? Clown... Barney sighed and reverse summoned her back to her homeland. The sweat was visible on his collar and it started dripping down his forehead. What a nasty individual, eh? Well, I think it's better if we do the rest of it without her around us, she's quite powerful and it could be dangerous. Though, trust me, she will always be there for you and you can rely on her. It's just that sometimes, you know... her temper... Barney scratched his head. So, she is one of the most powerful sensors because she doesn't sense chakra like ninja do, but actually water molecules. That's right. Anywhere on the battlefield, with utmost precision. Since everything is pretty much made with at least a tiny bit of water in it she can easily track movements and changes in the surroundings. The easiest to track are humans because our bodies are composed of a lot of water and they way she tracks movements is by sensing the molecules in the air, the micro-moisture. As something moves through the air, she can sense the disturbances and alert you through the special mindlink, without giving away her position. Same applies for the ground as well. I guess the only issue would be in places like Suna and Iwa where the air is very arid and the ground is very dry. On top of this ability she can manipulate water amazingly well. She can either materialize a very powerful shield around herself and you or she can exhale a powerful jet. The shield is transparent and in the shape of a sphere of sorts, protecting you from top to bottom. On the other hand, the jet has long range reach and it can be very wide and very difficult to avoid or counter.