Innocent and carefree, Tadashi is ranked 5th in school. His mother, a fierce and intimidating woman, is the director of the school and the primary reason why he is in the SA; she told him he would be allowed to do whatever he wanted if he became a member of the SA. He suffers from wanderlust and frequently likes to vanish on some journey and return later for special school events. Tadashi is smarter than he looks and acts, though is usually the character who is most often comically attacked (frequently by Akira and Kei) because of his careless comments or reckless behavior. He loves Akira, but often makes rude, weird, stupid or inappropriate comments that provoke her to beat him up. Tadashi also seems to enjoy playing with puppets, is fond of Akira's cooking, and appears to like being beaten up by her.

Source: Wikipedia