Turbulent Four Seasons

Itachi and Shisui both attack their opponent with Fire Release: Great Dragon Fire Technique. Through the blazing fire, Itachi launches a barrage of kunai at them. Afterwards, Shisui appears behind the opponent, grabbing one of the kunai and in unison with Itachi launch a flurry of attacks with a kunai each in hand.

Trivia

 * This technique's name references a poem, in which the snow, the moon and the flowers are used to describe the beauty of the four seasons.