Kaito is an energetic person with a passionate heart, who lives for dreams and romance, and tends to give somewhat dramatic encouraging speeches for others. He believes you need to take risks for the sake of your dreams and should't limit yourself nor ever give up. Due to his clichéd hot-blooded spirit and his document falsification he could pass the astronaut examination, proving that he is smart. Being the Ultimate Astronaut, he harbors a dream and a great longing to go to space, and already considers himself a space legend. He often refers to himself as "The Luminary of the Stars" and talks about the Universe being on his side. Furthermore, he talks about being popular with women and children, and he thinks that his goatee gives him a "glamorous celebrity vibe".

With his clichéd passionate nature, Kaito possesses some slightly old-fashioned opinions, believing that men should be real men (often dramatically talking about "man's passion") and women should not use real weapons and are more suited to childcare (even telling this to Maki, who is the Ultimate Assassin.)