One shockwave is made of particles of support. The first wave has 88 particles. Each sale adds a particle, and the next wave inherits those particles. The sooner you buy, the closer your particle is to the fist. 9 large particles = 9 battles (8 real, 1 hollow). The crimson particle on the front line = the next strike. 10% of sales will be accumulated as a player support fund and held until the player receives it. His matches usually end in the 1st round. There's no time to hesitate.