Also known as: チャコ
Chako is the secondary antagonist in The Storm Called: The Adult Empire Strikes Back. She is Ken's partner who feels the same as Ken and disliked the "smell" of 21st century. Together with Ken, she built the 20th Century Expo. They also built a village, which is always in the evening to bring out the nostalgic feeling in adults living there, in the building and lived there in an apartment with Ken.