Tsunade then bought out a chakra paper from her kimono and hand it over it to Ren and told him to move his chakra to the chakra paper when he did do it .
The chakra paper was divided in two equal half with one part being soaked in water and other part being hardened.
Seeing this tsunade was shocked has the results was similar to her grandpa the 'god of shinobi's hashirama' who also add similar chakra type.
Then tsunade went on to tell Ren "you have both strong affinity to water and earth .as you already have mastered chakra control now let's have you master this chakra types ."
Ren was however surprised seeing this as he also hoped for other chakra nature's but he was not disappointed it's not like he can't learn jutsu's of other chakra type it's that it will not be as natural as his chakra type jutsu's but with his perfect chakra control he was sure he can do it.
For now he decided to solely focus on water and earth and gain complete mastery over them .first he decided to began with the water .so tsunade took him to the lake which was within the senju compound and then told him that "you have already mastered water walking ,now let's go on with stream control " then she slowly manipulates by taking a small stream of water from lake as it roses up and then she converts into ball then to other shape.
It was not at all difficult for tsunade as she was proficient in water element as it was also one of her chakra nature along with fire ,earth and yang and yin release which is specifically used by her for the medical ninjutsu.
After doing it tsunade told Ren to similarly practice it .then she went to konoha hospital to go on with her work and here Ren started his practice of water element control .
At starting he was not able to grasp the control water but he soon got hang of it due to his talent of perfect chakra control as this talent includes every chakra element of the chakra then he started to make it float upwards but no he can't do it.
The time passed while Ren kept practicing shizune and tsunade used to come talk encourage and give him some advice before going out to their work whereas he also got into his training .being deligent everyday and not at all missing even a single day to rest as he was enjoying his training .he has lot of things to achieve in this world and he does not want to be behind from the plans he had so he had to move on and do every possible thing .
One day when he was training shizune came and informed him about the death of white fang 'sakumo hatake' due to him being blamed for saving his comrades instead of priortizing his village sakumo committed suicide.
After saying that shizune went of to hospital in search of tsunade in order to know more about it.
Here Ren began thinking that all is going according to the timeline then now kakashi should be feeling down this was one of the incident which shaped him.though i was not happy about the death of white fang it was like just losing an jewel just because of some dirt .
Kakshi should now be at age of four similar to me .i think we both will go to the academy at the same time and i was also waiting to see the strongest person according to madara 'might guy' now let's get into the training.
Time skip (3 months)
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Now Ren who was in front of the pond can easily so what tsunade thought him controlling a stream of water and converting it into any shape but Ren wanted to do more he wanted to controll the entire lake to be able to move according to his will.so the training continued.
At the same time while Ren was training outside the senju compound the entire konoha was different there was lot of political shit going on after the second ninja war there was economic imbalance konoha can out of the war in favourable position compared to iwagakure (hidden stone) and sunagakure (hidden sand) who lost lot of shinobi ,finance ,land and resources.there was also internal factions within konoha which was creating a civil war and third hokhage was facing lot of challenges on maintaining the stability.
The heroes of the second great ninja war the sanins where in their own part tsunade within the konoha hospital and worked on her medical ninjutsu ,orochimaru had began his human experimentation for immortality and lastly jiraya who was training nagato,yahiko and konan within hidden rain village he should soon come back and become a spy and intelligence gathered and minato's sensei soon.
The second great ninja war did come to an end with armistice after 14 years and according to the timeline the third ninja war will began after a decade of gap between second and third ninja war so according to Ren's calculation he is now four and he was born during the war period and the war ended when was two years old so basically third great ninja war will began when he will be twelve or thirteen years old so he got only eight more years to work on his strength so got to keep up .thinking this Ren went into his training with renewed vigour and energy...