The only thing Hayate-sensei felt was a wave of chakra passing through him then, nothing more he then looked at Ren confused, and asked "What was that? What did you do?" then Ren scratching his cheek with a finger said "Well, that is another way to use chakra but if you want to in some way classificate it .... well think about the spell used by priest...but this one in particular hides the physical form and chakra of the caster by bending light so as long as we are still and silent no one will be able to find us".
Even if Hayate had other questions, he kept it for himself and again followed after Baki, soon he reached a building near the sands guest residence, a classical japanese building with to big Koi Fish statues on his roof, on top of one of the fish was Gaara staring at the moon.
As Baki was checking on Gaara, from one of the shadow the figure of Kabuto come out who says "How is your little weapon?" and Baki answer "Really riled up, he almost can control himself, how is your Oto ninja? too bad he got eliminated, I thought he was supposed to measure the strength of that Sasuke kid"
While still looking at Gaara Kabuto says "He is still at the Hospital going under operation, that Ren blow while vicious did not do some irreplaceable damage, but now Dosu is no longer useful, and I was given the order to abduct Sasuke but I failed haha"
A worried Baki then "What?" and with a grin Kabuto continues "Yes the found out that I am a Oto spy too" and Baki "Then if they find out that you are meeting with me here, our plan to crush Konoha, everything will be ruined"
And continues "I had heard that you were Orochimaru's right-hand man, you are uncovered by Konoha and then show up to meet me like this, this isn't what I was expecting..." but Kabuto interrupt him "Well... to be accurate they didn't uncover my identity I reveled it myself, I wanted to see how Konoha would react with that information, taking Sasuke after won't be a problem."
"If it seems you are failing then we will withdraw, you came to us with this plan in the first place." said an annoyed Baki na continue with "Suna will stay in the background until the very end, this is Kazekage-sama's will".
Then Kabuto give Baki a scroll with the plans on it and told him to tell his team about the plans and then excused himself, in the meantime Ren noticed that Hayate-sensei was about to move and with Kabuto's sensitive ear he will hear the sound he'll produce so he in hurry draws the symbols of the spell in the air and chantlessy use the Bakudō #9. Geki (Strike), his entire body permeates a red energy, which then engulfs Hayate-sensei's body, causing complete paralysis, then with his finger Ren sign to keep quite.
Some time after making sure that both are gone, Ren lift the spell on his sensei and Hayate ask "*cough*cough What was that about Ren?" soon Ren explain "That was another spell that cause paralysis on a target and I used because you were about to move when both Kabuto and the Suna jonin were still here, come on sensei one of them worked for Orochimaru and was a spy in this village and nobody found out about him until, as he said, he himself reveled he was a spy do you think such person is not extra careful when dealing with such things?"
Hayate-sensei notice once again that he was careless 'What is wrong with me today? Tracking and stealth are one of my specialities that is why the Hokage gave me the mission to follow the Suna jonin and I did many mission as dangerous if not more than this, and I commit 2 beginner mistakes, it's like the world want me dead for some reason'
Then he said to Ren "You are right, it seem that today I'm not in my best condition,*cough*cough thanks for helping me Ren but now I have to report to the Hokage about everything we heard" and before Ren could ask he add "Yes you can come too".
And so Ren and Hayate move back to the Hokage office while still making sure that nobody was following them, after a while they finally were able to met with the Hokage who was still fighting with his nemesis, paperwork.
Before starting the report, Ren stopped Hayate-sensei from talking and did a quick check then send a signal to the Hokage saying that the coast was clear, then Hayate started doing his report, starting from when the Hokage gave him the mission, till the part where he met with Ren, at that point the Hokage said "You were for sure careless, was there something on your mind? is Yugao-kun pregnant?"
Confuse Hayate-sensei asked "Not you too Hokage-sama *cough*cough what is the deal with pregnancy" and while clearing his pipe in a sage voice he said "You see there is this strange thing in the ninja world where when a shinobi is about to become a father, strange things happen and in the end he died for some common mistakes or in some seemingly easy mission"
Hearing that Hayate seem lost in thought for a few second then he continued with the report, at the end of the report, the 3rd Hokage after thinking for a while said "Good job Hayate, and you too Ren, with this now we are now sure that Oto and Suna are working together, and will probably do something during or after the third test, Ren continue like nothing is happening, I want to give them the illusion that we are still totally in the dark ,you are now dismissed go rest, meanwhile Hayate go and discreetly call all the jonin, we will have a meeting in the Hokage residence to talk about this situation and give them further instruction".
Then Ren, after saluting his sensei and the Hokage, went back home where he had a cold dinner and then went to sleep.