Sage
https://books.rakuten.co.jp/event/e-book/ereaders/kobosage/
Libra 2
https://books.rakuten.co.jp/event/e-book/ereaders/kobolibra2/
Key difference:
Sage
8 inch
Supports Stylus
Flat Surface
Dropbox
Only Black Color
30,800 yen
Libra 2
7 inch
Uneven Surface
White or Black Color
23,980 yen
Both Sage and Libra 2 come with 32 GB, and supports Bluetooth.
