I have had the notion that Sarada learns to use eight gates ever since Naruto Gaiden. This idea is inspired by the name The Scarlet Spring. I assume it's referring to Sarada. Scarlet = Sarada who is always wearing red and her Sharingan. Spring = The springtime of youth which is a reference to Guy and Rock Lee whose only ability is eight gates. So I surmise that The Scarlet Spring is referring to an ability that Sarada learns which will make her reknown as The Scarlet Spring because she is able to use her Sharingan to control the eight gates ability. I was reading chapter 672 of Naruto when it dawned on me how it will work. In case you haven't had the pleasure of reading my Sarada threads I think that she will acquire the 9 tailed beast chakras. This ability will a combination of tailed beast chakra, senjutsu, byakugo, sharingan, and eight gates. First of all I have to state that sharingan originate from the ten tails. We also know that the ten tails is able to amass a ton of nature charka and it is this chakra that the tailed beasts were created from.
I will try my best to explain how these abilities work together to create The Scarlet Spring.
It all starts with her Sharingan ability to perceive chakra points and acute chakra control. Once she learns byakugo she will easily master it. Once she learns byakugo it will allow her to use sage mode. This is because sage mode requires the user to have a lot of chakra reserves to balance the influx of nature energy into their body without being turned into stone. When she activates byakugo her chakra pool will be massive. So much that she will have a gravitational pull that causes the nature chakra around her to gravitate towards her. She will begin to perceive this with her Sharingan and will take nature chakra into her system and learn to balance it naturally. Similar to how Madara was able to control Hashirama's sage mode without prior experience of controlling nature chakra. Sasuke was also capable of this. It seems that sharingan users can easily manipulate nature chakra. I would like to say that is because sharingan originated with the ten tails. So she begins to perform senjutsu and becomes a sage. Now you gotta figure out what kind of sage is she? When she activates her sage mode she stores the nature chakra in her byakugo but now there is so much chakra that she has to compress it. Ten tails and tailed beast chakra is compressed nature chakra so she's on the right track. The thing I haven't figured out yet is how she turns the compressed nature chakra into tailed beast chakra. Actually I have figured it out but I don't want to spoil it all. There is at least one possible way that fits perfectly into the lore. But I rather skip that part for now. As she begins to store the compressed chakra her byakugo seal takes on a new shape. At some point she unlocks her MS and it give her even more superior chakra control and she is able to absorb the nature chakra passively. The problem with this is she has way too much chakra and cant store it all in her byakugo so she begins to store it in her chakra nodes the same ones that are used in the eight gates technique. This is requires a high level of skill with senjutsu and chakra control because each gate must maintain a balance of her chakra and nature chakra. Not only are there multiple gates being controlled at once but the chakra levels are constantly fluctuating because of the chakra that she absorbs and the nodes doing their task of bringing chakra into the body. Now when she activates her byakugo she is able to open the gates to access the stored chakra and each gate contains tailed beast levels of nature chakra in them. Each gate has a corresponding tailed beast form that stacks on top of the power normally released from opening the gates. The ninth gate would be stored in her susanoo.
I will try my best to explain how these abilities work together to create The Scarlet Spring.
It all starts with her Sharingan ability to perceive chakra points and acute chakra control. Once she learns byakugo she will easily master it. Once she learns byakugo it will allow her to use sage mode. This is because sage mode requires the user to have a lot of chakra reserves to balance the influx of nature energy into their body without being turned into stone. When she activates byakugo her chakra pool will be massive. So much that she will have a gravitational pull that causes the nature chakra around her to gravitate towards her. She will begin to perceive this with her Sharingan and will take nature chakra into her system and learn to balance it naturally. Similar to how Madara was able to control Hashirama's sage mode without prior experience of controlling nature chakra. Sasuke was also capable of this. It seems that sharingan users can easily manipulate nature chakra. I would like to say that is because sharingan originated with the ten tails. So she begins to perform senjutsu and becomes a sage. Now you gotta figure out what kind of sage is she? When she activates her sage mode she stores the nature chakra in her byakugo but now there is so much chakra that she has to compress it. Ten tails and tailed beast chakra is compressed nature chakra so she's on the right track. The thing I haven't figured out yet is how she turns the compressed nature chakra into tailed beast chakra. Actually I have figured it out but I don't want to spoil it all. There is at least one possible way that fits perfectly into the lore. But I rather skip that part for now. As she begins to store the compressed chakra her byakugo seal takes on a new shape. At some point she unlocks her MS and it give her even more superior chakra control and she is able to absorb the nature chakra passively. The problem with this is she has way too much chakra and cant store it all in her byakugo so she begins to store it in her chakra nodes the same ones that are used in the eight gates technique. This is requires a high level of skill with senjutsu and chakra control because each gate must maintain a balance of her chakra and nature chakra. Not only are there multiple gates being controlled at once but the chakra levels are constantly fluctuating because of the chakra that she absorbs and the nodes doing their task of bringing chakra into the body. Now when she activates her byakugo she is able to open the gates to access the stored chakra and each gate contains tailed beast levels of nature chakra in them. Each gate has a corresponding tailed beast form that stacks on top of the power normally released from opening the gates. The ninth gate would be stored in her susanoo.