Itsuomi doesn't seem to show much of his facial expressions, making it a mystery with what he thinks at times. He is very outgoing and always tries to learn from other cultures or points of view, to the point that sometimes it seems that he knows no limits or personal space. This means that when he has free time he travels abroad to expand his knowledge. He fluently speaks English, Spanish, German, and Thai. He also learned Japanese Sign Language to interact with Yuki Itose.