Izuru enjoys unpredictability, which can make him feel more emotional, but he also tends to quickly grow bored because his supernatural analytical skills and intuition cause him to quickly predict things with surprising accuracy. This is seen in Chapter 0 of Danganronpa 2, as he is visibly excited by the rocking of the boat only to find it boring a few seconds later (he is also so focused on the rocking that he doesn't even realize he's on a boat, at first).