While appearing calm and composed, Jouno takes most things quite seriously and dislikes people who are more carefree about whatever he deems important. Since he is blind his other senses have been heightened to the point he can navigate life perfectly though it does sometimes lead to overstimulation, which he dislikes. Despite his collected personality he can be quite scary when needed, even downright sadistic, he's incredibly smart and not someone to be messed with in any situation.