Do you see the pic where Naruto is creating Kakashi's eye??
There is a discription below that in Japanese starting with ↑. Now read the following translation. Its just a fan translation as of now so we don't know what exactly it says.
Here we will attempt to analyze the primal properties of the mysterious Shadow and Light Style jutsu.
Six Paths
The secret Jutsu that created all things from naught.
Shadow Style which can create form out of naught and Light Style which can instill life into that form. Deftly manipulating these two properties, the Sage of Six Paths—Ōtsutsuki Hagoromo—developed the Creation of All Things Jutsu. He likewise created the nine bodies of the Bijū from Ten Tails' Chakra, making them another gift of Shadow and Light Style. Later, the Uchiha clan would tend to inherit the power of Shadow Style, while the Senju clan would tend to inherit the power of Light Style.
↓ Mental and physical energy. That is Shadow and Light Style.
↑ Having gained Hagoromo's power, Naruto was able to perfectly demonstrate the power of Shadow and Light Style.
Hiden
The fragments of Shadow and Light Style that became the basis of many Jutsu.
You may therefore wonder whether the Uchiha and Senju can harness the power of Shadow and Light Style. The answer is no. For example, even though the Sharingan can be said to "create form out of naught," you will find that Genjutsu primarily falls within the realm of Shadow Style. There are also many Shinobi clans that have inherited Hiden Ninjutsu.
To elaborate, Shadow and Light Style, which doesn't belong to the five elemental nature transformations, is often used in an elementary fashion. For example, the Akimichi clan uses Light Style to increase their body mass and the Nara clan uses Shadow Style to stretch and alter their shadows. In this way, even if they aren't Uchiha or Senju, Shinobi harness Chakra and in so doing harness the basis of Jutsu, which is most certainly rooted in the fragments of Shadow and Light Style...
← Traces of Shadow and Light Style can be found in certain Hiden Ninjutsu...