Setting: SI/OC insert
Starting time period: just before Canon starts
MC/OC/SI: a year older than the Konoha 12
Chakra nature: Yin (Dark)
Possible relationships: Ino Yamanaka, open
Concept idea:-
Reborn into the Naruto universe OC finds himself being reborn as a member of the Nara clan, with his intelligence boosted due to his Nara Bloodline and his clan's affinity for Shadows, just what will he accomplish.
Non-lazy Nara's can be very dangerous opponents, especially when they have so many media to draw ideas from to create new Jutsu.
After all Shadow is just a few steps from true darkness, and darkness by extent can swallow everything, so with a Nara who isn't limited by being lazy and has drive, just how far can he go.
Future ideas:-
Multitude of new Shadow Jutsu, inspired by other anime and fiction
Possible unique summon contracts with ravens or crows as they match the darkness theme