shikamaru sees his teacher disappear then appear behind him with a spike against his throat made from his sensei shadow, he thought what I expect from a shadow teacher, disrespect I only have the highest respect for you shikamaru said, he then hears his teacher asking what he knows about our clan so shikamaru says shikamaru says yes sensei im shikamaru nara as he replied to the mid aged man in front of him,
shikamaru then begins to speak about the nara clan is known for their intelligence, ninjustu that entails the manipulation of shadows, and tending of deer such as Rikumaru, which graze in a large area of the Nara clan forest, The Nara clan has a special relationship with the Akimichi and the Yamanaka clan. For several generations, members of these three families have formed "Ino–Shika–Chō" trios,
pausing for a moment shikamaru sighs and thinks this is boring then says the nara clan ability's is shadows they can manipulate any shadow they are in or shadows they send there own shadow to which is the basis of many of the nara techniques, they can even control shadows underground to get the opponents, some of the justus can even catch weapons that a thrown at them.
then shikamaru says the strengths and weakness of the nara ability's are
Strengths
1. It is sneaky type of technique and hence can be used to surprise the opponent, also can manipulate any shadows
2. It is pretty much efficient technique, I.e. once opponent is caught using the shadow it is difficult to escape.
Weaknesses
1. Opponent needs to be brought within the range of this tech as shadow can't be stretched after certain limit.
2. light if there isn't any light no shadows so we cant use our techs