Naruto: Reincarnation With All Existence System

Since Ren was slightly tired out from just fighting Sora he decided that he and Sora would attack Kazuma (Furido) once it was later at night so that both of them could rest and that Kazuma (Furido) probably wouldn't have his guard up that much at night time. So Ren went back into his hiding area and began to rest until night time. Once it was night time Ren had Sora tell him where Kazuma (Furido) was currently and when he got told where he was Ren get closer to that area. After Ren was close by he told Sora to go into his tailed beast transformation and attack Kazuma (Furido).

Now that Sora was in his three-tailed form he began to attack Kazuma (Furido) and Ren didn't go to help Sora yet because he wanted to see how strong Kazuma (Furido) is. The fight had gone on for almost a minute and Ren saw that Kazuma (Furido) was absolutely destroying Sora in the fight. The main reason Kazuma (Furido) was beating Sora was that his taijutsu was almost even with Sora and he also had access to multiple kinjutsu and was very skilled with fuinjutsu.

As Ren continued to watch he saw that Kazuma (Furido) was about to reseal Sora's nine-tailed chakra, so he decided that it was about the time when he was going to go into the battle. Since Kazuma (Furido) was currently about to reseal Sora he hadn't yet noticed Ren rushing towards him because of Ren's owl chakra aura on, which made him completely silent. When Ren was rushing towards Kazuma (Furido) he activated his blood boiling and seven heavenly breaths to its third activation.

The reason Ren only activated seven heavenly breaths and blood boiling was that when he also used the eight gates he gets tired out a lot faster than normal. The other reason was that the blood boiling would greatly speed up Ren's blood flow so when combined with seven heavenly breaths he didn't have to worry about having less oxygen in his bloodstream because of the increase in his lung capacity. Before Ren was about to attack Kazuma (Furido) he activated his outer bone armor jutsu so that his defense and brute strength was higher.

Now that Ren had his bone armor he began his attack on Kazuma (Furido) and punched Kazuma (Furido) right in the left part of his back. Since Kazuma (Furido) wasn't expecting to be attacked this punch had sent him more than twenty meters back and he got sent directly into the wall of one of the nearby buildings.

"It seems that you are the one who unleashed Sora's seal. Based on your attack I will need to get serious." - Kazuma (Furido)

After Kazuma (Furido) said this he took out his muti section monk staff that was connected by chains and then had the front part detach and sent it forward at Ren. If Ren wasn't using his blood boiling he wouldn't be able to dodge the staff, but since he had it and seven heavenly breaths activated he could easily dodge it. Since Ren didn't want to get seriously harmed in this battle or from his blood boiling he decided that he should use his dojutsu so that he could end the battle way faster.

Ren decided that since Kazuma (Furido) was using his staff he would probably only be slightly better than Kazuma (Furido) with taijutsu, so instead of just rushing forward, he used a combined form of liquid bullet and lightning ball jutsu. This wasn't actually a new jutsu but instead, Ren had just made lightning balls inside the liquid bullet. Even though both of the jutsus were not that strong when they were combined and since Ren made almost twenty of them it was well enough to hold off Kazuma (Furido) for now.

Well, Kazuma (Furido) was held off Ren went to Sora and began to use his charka absorption jutsu because his chakra was almost 20% depleted from using that many liquid bullets and lightning balls combination. Since Sora was still in his initial tailed beast transformation Ren had begun to get some of his nine-tailed chakra. After Ren absorbed enough chakra Kazuma (Furido) had almost destroyed all of the jutsu that Ren had sent towards him and now only around three of them were still there.

Ren saw this he so he decided to activate hiding in the mist jutsu. Once this jutsu was activated Ren made some bone senbon and then threw them accurately towards Kazuma (Furido) because his dojutsu allowed him to see through the mist. Kazuma (Furido) wasn't able to dodge this senbon and Ren had aimed them right at his tenketsu. After Kazuma (Furido) was hit by the senbon he had also gotten hit by the last three liquid bullets. Kazuma (Furido) was greatly hurt by all of this and was almost not able to fight because of the condition his body was in. Then as Kazuma (Furido) was trying to find where Ren was he saw multiple red blades coming towards him and so he jumped over the blades and towards where the blades came from.

Then as he was still in the air going towards the direction where he saw the blood blades coming from, he saw a giant red dragon appear in front of him from the mist. Kazuma (Furido) knew that he couldn't dodge this dragon so he just tried to do the hand signs for earth wall as fast as he could. Right before he was hit by the dragon he had finished doing the hand signs and a wall came out of the earth and blocked the dragon.

'I will not be stopped this easily, I will become the one to unify this land.' - Kazuma (Furido)

Then right before Kazuma (Furido) could fall to the ground he saw that the earth wall began to crack and then he saw the red dragon continue to come towards him.

'No! This can't be the end.' - Kazuma (Furido)

Even though Kazuma (Furido) didn't want this to be his end the dragon was still much more powerful than Kazuma (Furido)'s body and his life was nearing its end.