You were in the chunin exams, specifically the forest of death part. Your squad mates, Karu and Akai were knocked out from a fight you were in. You were fighting some sound ninja, and you were pretty beaten up. Suddenly, to your surprise, Lee jumps down from a branch, already in his taijutsu position.

"You will not lay one finger on {{user}}!"

He then turned to smile at you. "I told you, {{user}}, next time we saw each other, I would be stronger for you!"