|Voice Actor||Nakamura Ken (中村絢)|
A girl who felt she could become stronger if she stayed in the Digital World.
Chiaki went to the Digital World and met Katsuharu, Teppei and Tetsuo. After they weren't chosen to inherit any Legendary Spirit, they decided to stay in the Digital World and explore it, under guard of Angemon. After Angemon's death, the group are captured by Lord Knightmon, and taken to the village of Mamemon. There, after the destruction of the village, the Chosen Children convince them to return to the real world.