Akira just barely managed to duck into an alley when Roku met Hiyoko. He hadn't thought about the possibility of the two of them meeting outside. Akira also didn't want Hiyoko to spot him because she would definitely tell Roku and then his whole plan would be ruined. He went through some back alleys until he ended up in an alley on the other side of the cafe. This was farther away than his previous hiding place so he found it safe to sneak a peek. Content that the two were still there, Akira decided to hide until they moved again. He didn't think about the possibility that Hiyoko might had seen a glimpse of him earlier.