It seems a localized version of Root Letter: Last Answer is now in the works!
The adventure visual novel was rated in Australia on April 18 and has been given a Mature classification. In addition, PQube appears to be handling its distribution in the west.
Root Letter: Last Answer launched in December 20, 2018 in Japan but has no English support.
We’ll be on a look out for more details about the game’s inevitable release in the west. Stay tuned.