Who should I approach that the shikamaru tale quest has begun? (Naruto Shippuden: Ultimate Ninja Storm 4)

You just select the adventure mode item and the choice should be highlighted there to go through the usual adventure mode or dlc

Desmond_Mayls
is there where to download separately the DLC shikamaru ??

where to download the DLC?

I downloaded here https://kat.cr/naruto-shippuden-ultimate-ninja-storm-4-update-v1-03-incl-dlc-bat-t12211162.html

Desmond_Mayls
How to add it to the game?

Just drop the contents into the game folder

Desmond_Mayls
I got an inscription the story of shikamaru is available in incentive, but you can't play it, what should I do?

You have not installed it

Desmond_Mayls
and how to install?

Look a little higher, I left the download link