Omoi is a very cautious shinobi, accustomed to pondering a situation for a long time before acting, which often causes him to retreat into his own thoughts. He is more level-headed and calmer than his hot-tempered partner Karui, but he has a vivid imagination and tends to exaggerate the consequences of even minor events. Karui calls him a pessimist, especially when he voices his worst fears about Killer Bee. Despite his habit of being overly cautious, Omoi is able to pull himself together instantly when the situation calls for composure and determination. He respects people who keep their word, even if they are enemies. Seeing the Akatsuki force Sai to fight his own brother filled him with genuine disgust, and he intervened without hesitation. For the sake of protecting his comrades and completing the mission, Omoi is ready to sacrifice himself, and even in the face of death, he maintains his composure. He treats leadership with a degree of skepticism but follows orders. On the battlefield, he is resourceful and inventive, able to find a way out of hopeless situations. His loyalty to Kumogakure and respect for his comrades are beyond doubt, and he keeps his personal feelings to himself.