Pearl Flash is a rush attack used by Kid Buu.
First, Kid Buu prepares to dash forward towards his opponent at tremendous speed. As he flies towards his target, his aura shines a bright pink and white. When the attack hits the opponent, it causes extreme damage.
Kid Buu uses this technique in his battle against Good Buu on the Sacred World of the Kai. Good Buu begins to lose quite easily to Kid Buu's might, so he attacks Kid Buu with multiple energy blasts. Kid Buu responds by using the Buu Rocket, managing to destroy Good Buu's head, much to the shock of Mr. Satan. However, Good Buu manages to regenerate it back, and then they continue their ongoing fight.
Video Game Appearances
In Dragon Ball Xenoverse 2, Pearl Flash returns as one of Kid Buu's Super Skills which can be obtained by the Future Warrior by purchasing it from the Skill Shop. It can also be used by Majins as one of their Super Skills while in their Pure Majin form.