I was messing on the kdroid website to find more info about this project, and so far I have come up with two major conclusions:
1. They somehow have two websites: kdroid.org and kdroid.club
2.The android system turns out to be a slightly modified SONY Digital Paper (according to google translate
https://translate.google.cn/
http://kdroid.club/doc/DPT%e5%ae%89%...b%e5%86%8c.pdf