Kido Jo

Profile
Jou starts out a very high-strung and overstressed person. As the oldest of the Chosen Children, he often feels it's his duty to make sure everyone is doing okay. Though nervous and clumsy, he is considered very trustworthy and is an extremely responsible person.

Jou lives with his father and mother. His father is a doctor, as is the Kido family tradition. Jou has two older brothers, Shin and Shuu; Shin is interning to be a doctor, like his father, while Shuu is studying anthropology in Kyoto under Takenouchi Haruhiko, Sora's father.

Prelude to Digimon Adventure
When Jou was young, he lived in Hikarigaoka with his parents and older brothers. One March 1995, he witnessed the fight between Greymon and Parrotmon. At the time, he was talking to Shuu, who was at a friend's house. After few years, his family moved to Odaiba.

Digimon Adventure: Our War Game
Jou was taking his required exams to pass onto a prestigious private middle school.

Between Digimon Adventure and Digimon Adventure 02
In May 2000, Jou arrived at the Digital World and gave up his Crest power to free the Four Holy Beasts. As a result, Gomamon lost the power to evolve to Perfect.

Later that month, Jou had a discussion with Shin on the phone, in which he told him of his plans to become a Digimon doctor.

Digimon Adventure 02
Now in his last year in a private middle school, Jou has grown up a lot and became a calmer individual. He is still the same trustworthy and responsible person he had always been, and still doesn't go anywhere without a small first aid kit. He is a bit of an older brother figure to Hida Iori, who inherited the trait of Sincerity from him.

Digimon Adventure 02: Diablomon Strikes Back
While Koushiro rounded up the Chosen Children, Jou was busy trying to figure out if he has been accepted to his new high school. After he confirmed this, Jou rushed over and tried to give Daisuke and Ken his bicycle, so they could arrive at Rainbow Bridge faster. However, Daisuke commented that there were two of them. A girl rode by an a bicycle so Jou chased her down to borrow hers. Both Jou and the girl arrived at Rainbow Bridge on time to see the defeat of Armagemon.

Digimon Adventure 02: Hurricane Touchdown/Golden Digimentals
Jou was writing something, but a reaction from his digivice caused this to vanish. He appeared in Chocomon's dimension, where he was deaged to approximately the age of five, the same age Wallace was when he received Terriermon and Chocomon's egg. After Chocomon died, he returned to his original age and location.