Akira had also noticed the crowd forming but he didn't want to leave before he knew that Roku would get that money. He really had a one track mind. He noticed a knocking sound. When he turned into the direction of the sound he saw Roku behind the window. His first reaction would be to run away now that Roku had spotted him. But he still had that small bundle of money in his hand. He waved it towards the window and then put it in front of Roku's door. Roku probably couldn't see what it was. After that Akira made a run for it before the growing mass of people would decide to lynch him. After a succesful escape Akira had to calm down first, his heart was pounding like crazy.