Yaku did not waste time.
His mind flashed, evoking a new image that transcended the normal scopes of man. This was an image that couldn't be seen, but felt. Obscure to Enma and many others, Yaku saw what many men couldn't. His enlightened eye surpassed him, racing even faster than Yaku himself. The trees, grass, and sky became almost non existent. Moving at speeds unseen, his senses quickly left the physical world. His sight deteriorated. Yaku was staring at a different dimension... a dimension that only recognized one thing. Chakra. His ability allowed him to identify sensors such as himself, but even more so, it allowed him to tell how far their reach went. He could see it all. Pockets of unmarked and unwatched areas revealed themselves to him. His mind reached out and he was running, Enma close behind. Large swaths of land went undetected and Yaku took the opportunity to advance.
Navigating through the edge of the forest was easy, but the closer they got, the two missing nin, would find the power of Mamorinuku hard to fool. Both Yaku and Enma gained ground, but it became increasingly slower as the two were forced to wait, sometimes halting altogether for the sensor patrols to pass by. Yaku made sure to keep a wide berth from any sort of detection. Any trace of a fuuinjutsu and its occupying chakra was avoided like the plague. His sensor abilities allowed him to see the full extent of any fuuinjutsu's reaches. He silently ushered Enma and his crows forward.
"At this rate, we'll be lucky to get within 10 miles of the village." Yaku looked disappointed, his eyebrows revealing an expression of dissatisfaction. The Fushinkou had hoped to get much closer, but his expectations would have to be cut in half. His voice came out in a hushed whisper, aware of the threat around them. Their expectations wouldn't be met, but Yaku knew that he could make do.
I will just have to expend more chakra than anticipated.
"Konoha has grown weak in peacetime" Yaku began, his voice as stoic as ever, trying to reassure himself. The Fushinkou's eyes were open, staring at the perceived direction of the village. He did not give Enma one glance.
"Their trust in the world is ill placed. Twenty years ago, we would have never dreamed getting this close. I suppose we can only be thankful for this opportunity. Our existence is paramount to their growth."
Yaku raised his hand, pointing to somewhere in the distance. It had to be only a mile away.
Were they here? Both of the missing nin began diverting slightly from the abundance of trees to a small ridge that jutted outward from the ground. It inclined upward, even standing over a few trees and giving the observer a slight view.
"It has been years since Konoha's last threat. You can only imagine their boredom. Their complacency. Their sense of security. I find it... interesting to say the least." His body perked, noting the significance of their arrival.
The small ridge was just before them. They both halted.
To help me temporarily to navigate through the forest, closer and closer.
Hitoshirezu Kenpa [Unseen Detection]
C-Rank Ninjutsu
After doing the correct handseals, Yaku will momentarily direct his sensor abilities to put priority on invisible and unseen chakra detection. Foreign chakra that is specifically hidden or non existent to sight will become a main priority and radiate more profoundly to Yaku when he is using sensor. This jutsu is used in conjunction with the prerequisite minds eye techniques to locate.
[Identification: Minds Eye]
C-Rank Ninjutsu
Concentrating and utilizing his sensor capabilities, Yaku can easily identify the atmosphere to see if a minds eye user was protruding itself into the area around him. Any anomalies in the air or disruption of the atmosphere with foreign chakra will present itself. Space being filtered by another minds eye user will stand out in comparison to unchecked places. This jutsu does not locate the source, it only identifies the usage of sensor being practiced in an area. The jutsu is used in conjunction with another sensor jutsu to help give it range (I.E. Beyond Senses).
[Identification: Empathy]
C-Rank Ninjutsu
By analyzing the area with his minds eye, Yaku can identify if the physical plane is being studied or analyzed by a user of Empathy. Normally the object(s), element will be riddled with sensor chakra. The jutsu is used in conjunction with another sensor jutsu to help give it range (I.E. Beyond Senses).
[Seal Detection]
C-Ranked Fuuinjutsu
Prerequisite: Sensor
If a fuuinjutsu is producing chakra into the atmosphere, Yaku will use his sensor skills to look at the chakra being emitted. By watching the way the chakra moves, he can understand the direction it began from. To do this, he will need to come into contact with the chakra and concentrate before having a full understanding where the chakra circulates. This will help him in locating hidden fuuinjutsu.