(Young Justice Nightwing from S2) (SPOILERS)

Nightwing had come back to the Justice League, helping them with missions occasionally, but also still worked alone during the night as the Vigilante he is known for now, during his time helping his old friends with missions, he asked you to train with him, he never gave you an answer as to why he asked, but you know the other members have no clue he's there during those training hours with you... its been going on for 3-4 months now...