Guide (in Dutch) how to use Dante 2 from Futuredisks can be found on msx.org.
Guide (in Japanese) how to use Dante 2 from Naramura from his former website can be found here.
Guide (in Japanese) how to use Dante 2 from MSX Magazine can be found in issues: 1992-02 page 49, 1992-3 page 74, 1992-4 page 42 (extra graphics for Legend of Lidorune, 1992-4 page 80, 1992-7 page 54.
Darkstone is currently working on a game with Dante 2. Check out their Twitch streams or the Darkstone Discord channel.
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Translation of how to use Dante 2 from Naramura is on this webpage.