The next morning Riku was very exhausted as he got minimal sleep the night before from his nightmare. He decided to go to meet Ryu Sensei to improve his swordsmanship he needed to be at his best in the case that Reo ever appeared before him. He also ept in mind that Ark followed him back to konoha and told him where he will meet to train him. He went to the diner that Ryu is normally at when he is not on missions or training. When he got there he saw Ryu just sitting and drinking as usual.
Ryu: Wow kid you look horrible.
Riku: I couldn't sleep last night. On this mission I found out some crazy things about my clan.
Ryu: Yeah Kakashi told me. But remember kid rest is important you can't fight when insanely tired as well as remember I told you to always stay level headed. Even if you have a nightmare try to relax and keep a calm mind. Looks like I we need to work on calmness when thinking about your family. But I have to give it to you your calmness when your family involved was very good for a child. I also can tell if your family is not involved your calmness is very good.
Riku: Yes sensei.
Ryu: Alright let's get to training we will fix your calmness while teaching you a technique to put your mind at ease as you get stronger as well as without a calm mind you can't keep up with this technique.
Riku: What technique is this?
Ryu: It is my fighting style that made me famous as a shinobi. I maybe the student of the white fang but there is a reason why I earned a different title.
They left to a different area then the usual forest but instead to a nearby river with many tall posts in it and there were still many trees nearby. He was confused oh how this would help him gain a technique to help him fight but he didn't doubt it remembering how much the forest helped him improve his basic swordsmanship.
Ryu: My technique that I created is very unique in the world of swords. It is very difficult for people to overcome as you can use it in many different ways to trip up opponents. It involves the speed that the white fang became famous for, your calmness of your mind to see all around you while in a fight, exceptional sword techniques, as well as acute control of chakra. We worked on your speed and nimbleness in the forest to a decent degree to start this. But now we will work on your eyes to see all the space around you as well as the speed of your sword. We will do this by having you cut in half all of the leaves that are coming to you and falling while on the post in the river.
Riku: Can I at least get an explanation and example of the technique?
Ryu: *sigh* Alright. This technique takes trickery to the extreme letting you cast a sound genjutsu, while being very fast to trick their eyes and ears just incase the genjutsu doesn't last, as well as making sure that your sword cut will hurt. Watch closely.
Ryu took out his sword and Riku blocked the sword causing there to be sound which was the activation of the genjutsu but it was so subtle that riku didn't think he was under a genjutsu. Riku saw Ryu appear behind him and slash his sword down which Riku tried to parry but lost balance as there was no substance behind the attack the next moment he heard a sword coming from another direction which he turned again losing more balance at that point a sword appeared at his neck from behind him he was so confused.
Ryu: That is how deadly the technique is I channeled chara to my sword to when it clashes with something genjutsu will come out leading to that image of me slashing to appear behind you and because you thought it was real you tried to parry losing balance. Then the next part was wind release jutsu to trick you after the sound genjutsu was done to turn again believing that there was a technique, and last was the decisive blow. Three things executed with great speed and that is the beginning the technique is more accustomed to a dance as many different steps can be made with the 3. This sword technique is more used for me to get information at first but once I get everything I use everything to the maximum. The idea is to go so fast that you trip up your opponent when their attacking and take advantage of it.
Riku: I see.
Ryu: Now start training. Get on the post.
Riku went onto the post and summoned Asami in her sword form. Ryu hit a nearby tree and the leaves started to fall and he was cutting through leaves but failed to cut through more than half of them there were too many he needed to speed up his sword with chakra. Be started doing better cutting through half and that was when Ryu started to throw leaves infused with chakra causing Riku to mess up again all over. He realized this is going to be harder than he thought this was only the sword part. He still needed to perfect the genjutsu part, the wind release to deceive with sound, as well as get better in body flicker. He needed to get through many steps to get through to master the technique.