Yellowish/Orangish energy around characters

[Solaris Vexius]

Lately, I've been seeing some of the storm 3 characters exert some yellowish/orangish energy/chakra. How do u do this? And what is this?

 

[Kettei]

Combination attack.(Xbox)Hold B.

 

[YellowFang]

Naruto gave them some of Kurama's chakra...

 

[SoulKiller]

Some combo I guess